SPEEDMASTER® SM PLUS™ SERIES SUB-MICRO INVERTERS Installation and Operation Manual
TABLE OF CONTENTS 1.0 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 2.0 SM-Plus™ DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 4.0 SM-Plus™ SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5.0 SM-Plus™ RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 7.
IMPORTANT NOTICE The following , and information is supplied to you for your protection and to provide you with many years of trouble free and safe operation of your LEESON Electric product. • Hazard of electrical shock! Capacitors retain charge after power is removed. Disconnect incoming power and wait until the voltage between terminals B+ and B- is 0 VDC before servicing the drive. • Hazard of electrical shock! Wait three minutes after disconnecting incoming power before servicing drive.
LEESON Electric SPEEDMASTER® SM-PLUS™ SUB-MICRO DRIVE INPUT POWER TERMINALS GROUND LUG ELECTRONIC PROGRAMMING MODULE (EPM) 3-DIGIT LED DISPLAY PROGRAMMING BUTTONS CONTROL TERMINAL STRIP OUTPUT (MOTOR) TERMINALS
1.0 GENERAL 1.1 PRODUCTS COVERED IN THIS MANUAL This manual covers the LEESON Electric SM-Plus™ Variable Frequency Drive. 1.2 PRODUCT CHANGES LEESON Electric reserves the right to discontinue or make modifications to the design of its products without prior notice, and holds no obligation to make modifications to products sold previously. LEESON Electric also holds no liability for losses of any kind which may result from this action.
1.4 RECEIVING Inspect all cartons for damage which may have occurred during shipping. Carefully unpack equipment and inspect thoroughly for damage or shortage. Report any damage to carrier and/or shortages to supplier. All major components and connections should be examined for damage and tightness, with special attention given to PC boards, plugs, knobs and switches. 1.
2.0 SM-Plus™ DIMENSIONS 0.38" R H W T U If R S T U V < = = = = 6.30" 0.19" 0.38" 0.18" 0.69" If R S T U V = = = = = 6.30" 0.28" 0.50" 0.24" 0.92" V D P S Dia. Slot Mounting Tab Detail HP 0.25 0.5 1 1.5 INPUT kW VOLTAGE MODEL 0.20 208 / 240 174452 0.37 208 /240 174453 400 / 480 174459 0.75 120/280/240 174492 208 / 240 174454 208 / 240 174455 400 / 480 174460 480 / 590 174464 1.1 120/280/240 174445 208 / 240 174493 208 / 240 174456 400 / 480 174461 H 5.75 (146) 5.75 (146) 5.75 (146) 5.
HP 2 3 5 7.5 10 15 20 25 30 INPUT VOLTAGE 208 / 240 208 / 240 400 / 480 480 / 590 2.2 208 / 240 208 / 240 400 / 480 480 / 590 3.7 208 / 240 208 / 240 400 / 480 480 / 590 5.5 208 / 240 400 / 480 480 / 590 7.5 208 / 240 400 / 480 480 / 590 11 208 / 240 400 / 480 480 / 590 15 208 / 240 400 / 480 480 / 590 18.5 400 / 480 480 / 590 22 400/480 kW 1.
4.0 SM-Plus™ SPECIFICATIONS Storage Temperature Ambient Operating Temperature Ambient Humidity Maximum Altitude Input Line Voltages Input Voltage Tolerance Input Frequency Tolerance Output Wave Form Output Frequency Carrier Frequency Service Factor Efficiency Power Factor (displacement) Overload Current Capacity Speed Reference Follower Control Voltage Power Supply for Auxiliary Relays Analog Outputs Digital Outputs -20° to 70° C 0° to 50° C (derate 2.
5.0 MODEL NUMBER SM-Plus™ RATINGS FOR MOTORS RATED HP kW INPUT PHASE INPUT (50-60 Hz) CURRENT (AMPS) (NOTE 1) POWER (kVA) 120/208/240 VAC 174492 174445 1 1.5 0.75 1.1 1 1 174452 174452 174453 174453 174454 174454 174493 174493 174494 174494 174495 174495 174444 174444 0.25 0.25 0.5 0.5 1 1 1.5 1.5 2 2 3 3 5 5 0.20 0.20 0.37 0.37 0.75 .075 1.1 1.1 1.5 1.5 2.2 2.2 3.7 3.7 1 3 1 3 1 3 1 3 1 3 1 3 1 3 16.6/9.6/8.3 24/13.9/12.0 2.0 2.9 1 1.5 2 3 5 7.5 10 15 20 0.75 1.1 1.5 2.2 3.7 5.5 7.
MODEL NUMBER FOR MOTORS RATED HP kW INPUT PHASE INPUT (50-60 Hz) CURRENT (AMPS) POWER (kVA) 400/480 Vac (NOTE 3) 174459 174460 174461 174462 174463 174447 174440 174441 174431 174432 174433 174500 0.5 1 1.5 2 3 5 7.5 10 15 20 25 30 0.37 0.75 1.1 1.5 2.2 3.7 5.5 7.5 11 15 18.5 22 3 3 3 3 3 3 3 3 3 3 3 3 1.6/1.4 2.9/2.5 4.0/3.6 4.6/4.0 6.2/5.4 9.8/8.6 14.2/12.4 18.1/15.8 27/24 35/31 44/38 53/45 1 2 3 5 7.5 10 15 20 25 0.75 1.5 2.2 3.7 5.5 7.5 11 15 18.5 3 3 3 3 3 3 3 3 3 2.2/2.0 4.0/3.5 4.7/4.
6.0 INSTALLATION NOTE: SM-Plus™ drives are intended for inclusion within other equipment, by professional electrical installers. They are not intended for stand-alone operation. DRIVES MUST NOT BE INSTALLED WHERE SUBJECTED TO ADVERSE ENVIRONMENTAL CONDITIONS SUCH AS: COMBUSTIBLE, OILY, OR HAZARDOUS VAPORS OR DUST; EXCESSIVE MOISTURE OR DIRT; VIBRATION; EXCESSIVE AMBIENT TEMPERATURES. CONSULT LEESON ELECTRIC FOR MORE INFORMATION ON THE SUITABILITY OF A DRIVE TO A PARTICULAR ENVIRONMENT.
6.2 EXPLOSION PROOF APPLICATIONS Explosion proof motors that are not rated for inverter use lose their certification when used for variable speed. Due to the many areas of liability that may be encountered when dealing with these applications, the following statement of policy applies: “LEESON Electric inverter products are sold with no warranty of fitness for a particular purpose or warranty of suitability for use with explosion proof motors.
7.1 INPUT VOLTAGE RATINGS Drives are rated for 120/208/240 Vac, single phase, 50-60 Hz input. The drive will function with input voltage of 120 Vac (+10%, -15%), at 48 to 60 Hz, or with input voltage of 208 to 240 Vac (+10%, -15%), at 48 to 62 Hz. Drives that are rated for 208/240 Vac, three phase, 50-60 Hz input will function with input voltages of 208 to 240 Vac (+10%, -15%), at 48 to 62 Hz.
7.2 INPUT FUSING AND DISCONNECT REQUIREMENTS A circuit breaker or a disconnect switch with fuses must be provided in accordance with the National Electric Code (NEC) and all local codes. Refer to the following table for proper fuse/circuit breaker rating and wire size. INPUT FUSE / CIRCUIT BREAKER RATINGS AND WIRE SIZE REQUIREMENTS (Note 1) 208/240 Vac, 1 phase HP Catalog Number 0.25 174452 0.5 174453 Fuse Rating Note(2) 10A 10A 1 174454 15A 1.
8.0 POWER WIRING Hazard of electrical shock! Capacitors retain charge after power is removed. Disconnect incoming power and wait until the voltage between terminals B+ and B- is 0 VDC before servicing the drive. Note drive input and output current ratings and check applicable electrical codes for required wire type and size, grounding requirements, over-current protection, and incoming power disconnect, before wiring the drive. Size conservatively to minimize voltage drop. Refer to Section 9.
9.0 SM-Plus™ POWER WIRING DIAGRAM 120 Vac SINGLE PHASE INPUT (WHERE APPLICABLE) THREE PHASE INPUT (WHERE APPLICABLE) 208/240 Vac SINGLE PHASE INPUT (WHERE APPLICABLE) OUTPUT (ALL MODELS) WIRE STRIP & TERMINAL SCREW TORQUE DATA 0.25 - 5 HP (0.37 - 3.7 kW) 4.5 lb-in / 0.5 Nm 0.24 in / 6 mm 7.5 - 10 HP (5.5 - 7.5 kW) 10 lb-in / 1.2 Nm 0.35 in / 9 mm 15 - 30 HP (11 - 22 kW) 18 lb-in / 2.0 Nm 0.5 in / 13 mm Do not connect incoming AC power to output terminals T1, T2, or T3.
10.0 CONTROL WIRING 10.1 CONTROL WIRING VS. POWER WIRING External control wiring MUST be run in a separate conduit away from all other input and output power wiring. If control wiring is not kept separate from power wiring, electrical noise may be generated on the control wiring that will cause erratic drive behavior. Use twisted wires or shielded cable grounded at the drive chassis ONLY. Recommended control wire is Belden 8760 (2-wire) or 8770 (3-wire), or equivalent. Strip off 0.20 to 0.
10.6 SPEED REFERENCE SELECTION If an analog speed reference input is used to control the drive speed, terminal TB-13A, 13B, or 13C (Parameter 10, 11, or 12) may be programmed as the input select for the desired analog input signal. When that TB-13 terminal is then closed to TB-2, the drive will follow the selected analog speed reference input.
NOTE: If TB-13A, TB-13B, and TB-13C are all programmed to select speed references, and two or three of the terminals are closed to TB-2, the higher terminal has priority and will override the others. For example, if TB-13A is programmed to select 0-10 VDC, and TB-13C is programmed to select PRESET SPEED #3, closing both terminals to TB-2 will cause the drive to respond to PRESET SPEED #3, because TB-13C overrides TB-13A. The exception to this is the MOP function, which requires the use of TB-13B and TB-13C.
11.0 SM-Plus™ CONTROL WIRING DIAGRAMS 11.1 SM-Plus™ TERMINAL STRIP Shown below is the terminal strip on the main control board, along with a brief description of the function of each terminal. The TB-2 terminals are internally connected to each other RS-485 SERIAL COMMUNICATIONS 0-10 OR 2-10 VDC OUTPUT: LOAD CIRCUIT COMMON 2 30 31 TXA TXB 0-10 OR 2-10 VDC OUTPUT: FREQ.
11.2 TWO-WIRE START/STOP CONTROL Shown below is the wiring diagram for a typical two-wire start/stop control scheme, using one maintained contact (such as that from a PLC) for RUN and STOP commands. The TB-2 terminals are internally connected to each other 2 30 31 TXA TXB COMMON 4-20 mA INPUT 0-10 VDC or 4-20 mA SELECT REVERSE COMMON FORWARD STOP COMMON 0-10 VDC INPUT 1 2 5 6 11 12 2 14 13A 13B 13C 15 25 MAINTAINED RUN/STOP CONTACT NOTES: 1.
11.3 ALTERNATE TWO-WIRE START/STOP CONTROL Shown below is the wiring diagram for an alternate two-wire start/stop control scheme, using one maintained contact for RUN FORWARD and another maintained contact for RUN REVERSE. The TB-2 terminals are internally connected to each other 2 30 31 TXA TXB COMMON 4-20 mA INPUT 0-10 VDC or 4-20 mA SELECT RUN REV RUN FWD COMMON STOP COMMON 0-10 VDC INPUT 1 2 5 6 11 12 2 14 13A 13B 13C 15 25 NOTES: 1.
11.4 THREE-WIRE START/STOP CONTROL Shown below is the wiring diagram for a typical three-wire start/stop control scheme, using momentary contacts (such as pushbuttons) for START and STOP commands. ' $)* " # ! '(' $# $' $# %&! ! " # ' $)* $ NOTES: 1.
11.5 SPEED POT AND PRESET SPEED CONTROL Shown below is the wiring for SPEED POT and/or PRESET SPEED control, and either a two-wire or three-wire start/stop circuit: The TB-2 terminals are internally connected to each other 2 30 31 TXA TXB COMMON PRESET SPEED SELECT PRESET SPEED SELECT 2.5K-10K½ PRESET SPEED SELECT START STOP COMMON 0-10 VDC INPUT 10 VDC SUPPLY 1 2 5 6 11 12 2 14 13A 13B 13C 15 25 NOTES: 1. Program the PRESET SPEEDS (Parameters 31-37) to the desired values. 2.
12.0 INITIAL POWER UP AND MOTOR ROTATION DO NOT connect incoming AC power to output terminals T1, T2, and T3! Severe damage to the drive will result. Do not continuously cycle input power to the drive more than once every two minutes. Damage to the drive will result. Hazard of electrical shock! Wait three minutes after disconnecting incoming power before servicing drive. Capacitors retain charge after power is removed.
Follow the procedure below to check the motor rotation. This procedure assumes that the drive has been powered up for the first time, and that none of the parameters have been changed. 1. Use the ▼ button to decrease the speed setpoint to 00.0 Hz. The left decimal point will illuminate as the speed setpoint is decreased. If the ▼ button is held down, the speed setpoint will decrease by tenths of Hz until the next whole Hz is reached, and then it will decrease by one Hz increments.
13.0 PROGRAMMING THE SM-Plus™ DRIVE The drive may be programmed by one of three methods: using the three buttons and 3-digit LED display on the front of the display, programming the Electronic Programming Module (EPM) using the optional EPM Programmer, and through a serial link using serial communications. This section describes programming the drive using the buttons and display, which are shown below: BUTTONS DISPLAY Mode To enter the PROGRAM mode to access the parameters, press the Mode button.
NOTE: If the display flashes “Er”, the password was incorrect, and the process to enter the password must be repeated. Use the ▲ and ▼ buttons to scroll to the desired parameter number. In the example below, Parameter 19 is being displayed, which is the ACCELERATION TIME of the drive: Use ▲ and ▼ to scroll to the desired parameter number (the example is Parameter 19 - ACCELERATION TIME) Once the desired parameter number is found, press the Mode button to display the present parameter setting.
13.1 SETTING VALUES IN TENTHS OF UNITS ABOVE 100 Parameter settings and the keypad speed command can always be adjusted in tenths of unit increments from 0.0 to 99.9. Above 100 however, values can be set in whole units or tenths of units, depending on the setting of Parameter 16 - UNITS EDITING. If Parameter 16 - UNITS EDITING is set to WHOLE UNITS (02), parameter values and the keypad speed command can only be adjusted by whole unit increments above 100.
13.2 ELECTRONIC PROGRAMMING MODULE (EPM) Every SM-Plus™ drive has an Electronic Programming Module (EPM) installed on the main control board. The EPM stores the user’s parameter settings and special OEM default settings (if programmed). The EPM is removable, allowing it to be installed in another drive for quick set-up. For example, if a drive is being replaced with a new one, the EPM can be taken out of the first drive and installed in the new drive.
14.0 PARAMETER MENU NO.
PARAMETER MENU (cont) NO.
PARAMETER MENU (cont) NO. PARAMETER NAME RANGE OF ADJUSTMENT 27 28 29 30 31-37 38 39 40 41 42 43 44 47 48 BASE FREQUENCY FIXED BOOST ACCEL BOOST SLIP COMPENSATION PRESET SPEEDS SKIP BANDWIDTH SPEED SCALING FREQUENCY SCALING LOAD SCALING ACCEL / DECEL #2 SERIAL ADDRESS PASSWORD CLEAR HISTORY PROGRAM SELECTION 50 51 52 53 54 55 56 57 58 59 60 FAULT HISTORY SOFTWARE CODE DC BUS VOLTAGE MOTOR VOLTAGE LOAD 0 - 10 VDC INPUT 4-20 mA INPUT TB STRIP STATUS KEYPAD STATUS TB-30 OUTPUT TB-31 OUTPUT 25.0 - 500.
15.0 DESCRIPTION OF PARAMETERS P01 LINE VOLTAGE SELECTION This calibrates the drive for the actual applied input voltage, and can be set to HIGH (01) or LOW (02). Refer to the table below for the proper setting depending on the input voltage.
NOTE 3: If this parameter is changed while the drive is running, the change will not take effect until the drive is stopped. Therefore, the allowable maximum frequency for drives with the High Output Frequency option (see NOTE 1) will not change if the carrier frequency is changed while the drive is running. P03 START METHOD Automatic starting of equipment may cause damage to equipment and / or injury to personnel! Automatic start should only be used on equipment that is inaccessible to personnel.
P04 STOP METHOD 01 COAST TO STOP: When a STOP command is given, the drive shuts off the output to the motor, allowing it to coast freely to a stop. 02 COAST WITH DC BRAKE: When a stop command is given, the drive will activate DC braking (after a delay of up to 2 seconds, depending on frequency) to help decelerate the load. Refer to Parameters: 21 - DC BRAKE TIME, and 22 - DC BRAKE VOLTAGE.
06 AT SET SPEED: Closes if the drive is within ± 0.5 Hz of the speed setpoint. 07 ABOVE PRESET SPEED #3: Closes if the output frequency exceeds the PRESET SPEED #3 setting. Opens if the output frequency is equal to or less than PRESET SPEED #3 (Parameter 33). 08 CURRENT LIMIT: Closes if the output current exceeds the CURRENT LIMIT setting. Opens if the output current is equal to or less than CURRENT LIMIT (see Parameter 25).
P10 TB-13A FUNCTION SELECT This selects the function of terminal TB-13A. Closing TB-13A to TB-2 (or opening in the case of settings 7 and 10) activates the selected function. The following functions can be selected: 01 NONE: Disables the TB-13A function. 02 0-10 VDC: Selects a 0-10 VDC signal (at TB-5) as the AUTO speed reference input. 03 4-20 mA: Selects a 4-20 mA signal (at TB-25) as the AUTO speed reference input. 04 PRESET SPEED #1: Selects PRESET SPEED #1 as the AUTO speed reference.
01 NONE: Disables the TB-13B function. 02 0-10 VDC: Selects a 0-10 VDC signal (at TB-5) as the AUTO speed reference input. 03 4-20 mA: Selects a 4-20 mA signal (at TB-25) as the AUTO speed reference input. 04 PRESET SPEED #2: Selects PRESET SPEED #2 as the AUTO speed reference. The drive will operate at the frequency programmed into Parameter 32. 05 DECREASE FREQUENCY: Decreases the speed setpoint when using the MOP function. Refer to Section 10.6. 06 JOG FORWARD: Jog in the forward direction.
06 EXTERNAL FAULT: Sets TB-13C as a normally closed external fault input. If TB-13C is open with respect to TB-2, the drive will fault. 07 REMOTE KEYPAD: Selects the optional remote keypad as the control source. Refer to Parameter 14 - CONTROL. 08 DB FAULT: Sets TB-13C as a dynamic braking fault input when using the optional dynamic braking module. When this input is activated by the dynamic braking module, the drive will trip into a “dF” fault and the motor will coast to a stop.
01 02 03 04 05 06 07 P16 DISABLED: Disables the serial link 9600, 8, N, 2- ENABLED WITH TIMER 9600, 8, N, 2- ENABLED WITHOUT TIMER 9600, 8, E, 1 - ENABLED WITH TIMER 9600,8,E,1 - ENABLED WITHOUT TIMER 9600, 8, O, 1 - ENABLED WITH TIMER 9600, 8, O, 1 - ENABLED WITHOUT TIMER UNITS EDITING This allows parameter and keypad speed editing in whole units or tenths of units above 100. Below 100, the value can always be changed by tenths of units.
P22 DC BRAKE VOLTAGE This sets the magnitude of the DC braking voltage, in percentage of the nominal DC Bus voltage (DC Bus = input AC voltage X 1.414). The point at which the DC braking is activated depends on the selected STOP METHOD (Parameter 04): IF COAST WITH DC BRAKE is selected, the DC braking is activated after a time delay of up to 2 seconds, depending on the output frequency at the time of the STOP command. In this case, the DC braking is the only force acting to decelerate the load.
P26 MOTOR OVERLOAD The SM-Plus™ is UL approved for solid state motor overload protection, and therefore does not require a separate thermal overload relay for single motor applications. The drive contains an adjustable thermal overload circuit that protects the motor from excessive overcurrent. This circuit allows the drive to deliver up to 150% current for one minute. If the overload circuit “times out”, the drive will trip into an OVERLOAD fault (displayed as “PF”).
P29 ACCELERATION BOOST ACCELERATION BOOST helps accelerate high-inertia loads. During acceleration, the output voltage is increased to increase motor torque. Once the motor reaches the new speed setpoint, the boost is turned off and the output voltage returns to the normal value. P30 SLIP COMPENSATION SLIP COMPENSATION is used to counteract changes in motor speed (slip) caused by changes in load.
Example: The critical frequency is 23 Hz, and it is desired to skip a frequency range of 3 Hz above and below the critical frequency (therefore the skip range is 20 to 26 Hz). PRESET SPEED #6 or #7 would be set to 20 Hz, and the SKIP BANDWIDTH would be set to 6.0 Hz.
Example: A 0-10 VDC signal is required to indicate 0-150% load. Setting this parameter to 150% will yield 10 VDC at 150% load. P42 ACCEL / DECEL #2 This parameter sets the second acceleration and deceleration rate of the drive. To activate this acceleration and deceleration rate, use terminal TB-13A, TB-13B or TB-13C. TB-13A and TB-13B can be set to AUXILIARY STOP which will cause the drive to decelerate to a stop according to the time programmed in this parameter.
04 RESET 60: Resets the users parameters to the factory defaults for a 60 Hz base frequency. 05 RESET 50: Resets the user parameters to the factory defaults for a 50 Hz base frequency. Parameters 24, 27, and 40 will reset to 50.0 Hz. 06 TRANSLATE: If an EPM from a drive with a previous parameter version is installed in a new drive, the new drive will function like the previous version drive, but none of the parameter settings can be changed (“cE” will be displayed if this is attempted).
P52 DC BUS VOLTAGE This displays the DC bus voltage in percent of nominal. Nominal DC bus voltage is determined by multiplying the drive’s nameplate input voltage rating by 1.4. P53 MOTOR VOLTAGE This displays the output voltage in percent of the drive’s nameplate output voltage rating. P54 MOTOR LOAD This displays the motor load in percent of the drive’s output current rating. P55 0-10 VDC ANALOG INPUT This displays the level of the 0-10 VDC analog input signal at TB-5.
P58 KEYPAD AND PROTECTION STATUS This indicates the status of the buttons on the keypad, and the status of the protective circuitry in the drive, using the horizontal segments of the LED. An illuminated segment indicates that the corresponding button is pressed, or the protective circuit is active. See the diagram below: FCLIM Mode OUTPUT FAULT NOTE: FCLIM is an abbreviation for Fast Current Limit.
16.0 TROUBLESHOOTING To aid in troubleshooting, Parameters 50 through 60 can be accessed without entering the PASSWORD. Simply press the Mode button twice to “skip” over the PASSWORD prompt, and “P50” will be displayed to indicate that the parameter menu has been entered and Parameter 50 (FAULT HISTORY) can be viewed. The ▲ and ▼ buttons can be used to scroll from Parameter 50 to Parameter 60. Once the desired parameter is found, press the Mode button to view its “contents”.
The table below lists the fault conditions that will cause the drive to shut down, as well as some possible causes. Please contact the factory for more information on troubleshooting faults. FAULT AF CF cF dF EF GF HF JF LF OF PF SF UF F1 F2 - F9, Fo FAULT MESSAGES DESCRIPTION & POSSIBLE CAUSES High Temperature Fault: Ambient temperature is too high; Cooling fan has failed (if equipped). Control Fault: A blank EPM, or an EPM with corrupted data has been installed.
17.0 SM-Plus™ DISPLAY MESSAGES The following describes the various displays and messages that can appear on the SM-Plus™ drive. 17.1 SPEED DISPLAY If the drive is in a STOP state (indicated by “_ _ _” on the display), and the commanded speed is changed, the display will show the commanded speed, and the upper left decimal point will turn on solid. About five seconds after a change is made, the display will begin to alternate between the commanded speed value and the “_ _ _” display.
DISPLAY CP EI EU JG OP Pr1 - Pr7 SPEED SOURCE DISPLAYS DESCRIPTION CONTROL PAD: Speed is set using the ▲ and ▼ buttons on the front of the drive. EXTERNAL CURRENT: Speed is controlled by a 4-20 mA signal wired to TB-25 and TB-2. EXTERNAL VOLTAGE: Speed is controlled by a 0-10 VCD signal wired to TB-5 and TB-2. JOG: The drive is in Jog mode, and the speed is set by Preset Speed #2 (Parameter 32). MOP (Motor Operated Pot): Contacts wired to TB-13B and TB-13C are used to increase and decrease the drive speed.
APPENDIX B – PI SETPOINT CONTROL OPTION The following describes the PI Setpoint Control software option for the SM-Plus™ drive. This software option has additional parameters compared to the standard SM-Plus™ drive. Also, some of the parameters found in the standard drive have changed in the PI version. PI Setpoint Control allows the SM-Plus™ drive to maintain a process setpoint, such as PSI or CFM, without using an external controller.
B.3 SETPOINT REFERENCES The following references can be used to adjust the process setpoint: 1. 2. 3. 4. Keypad (▲ and ▼ buttons) 0-10 VDC signal (from speed pot or other source) 4-20 mA signal Preset Setpoints (using Preset Speeds #4 and #5) NOTE: The setpoint reference and the PI feedback cannot be the same signal. If the drive is mistakenly programmed so that the setpoint reference is the same as the feedback reference, the setpoint reference will default to the ▲ and ▼ buttons. B.
B.5 DESCRIPTION OF PI PARAMETERS P10 TB-13A FUNCTION SELECT 12 P11 09 P12 10 P61 KEYPAD SETPOINT: This option has been added so that the ▲ and ▼ buttons on the front of the drive can be used as the PI setpoint reference source. Closing TB-13A to TB-2 will enable the PI mode and the ▲ and ▼ buttons can be used to select the desired process setpoint.
P63 MAX FEEDBACK This parameter should be set to the value of the process variable that corresponds to the maximum transducer feedback signal (10 VDC or 20 mA). See the example below: Example: A 0-100 psi transducer outputs 4 mA at 0 psi and 20 mA at 100 psi. Set MIN FEEDBACK to 0, and set MAX FEEDBACK to 100. The setpoint will then be adjustable between 0 and 100.
P69 0-10 VDC FEEDBACK This can be used to monitor the PI feedback when using a 0-10 VDC feedback signal. The displayed value will be scaled according to the MIN and MAX FEEDBACK parameters (62 and 63). P70 4-20 mA FEEDBACK This can be used to monitor the PI feedback when using a 4-20 mA feedback signal. The displayed value will be scaled according to the MIN and MAX FEEDBACK parameters (62 and 63).
P76 SLEEP DELAY This sets the amount of time the drive must operate below the SLEEP THRESHOLD (see P75 on the previous page) before the drive “goes to sleep” and brings the motor to zero speed. Example: SLEEP THRESHOLD is set to 15 Hz and SLEEP DELAY is set to 60 seconds. If the drive operates below 15 Hz for 60 seconds, the drive will go to sleep and the motor will stop.
P45 SPEED AT MIN SIGNAL This sets the speed at which the drive will run when it receives the minimum speed reference signal (0 VDC or 4 mA). This is used in conjunction with SPEED AT MAX SIGNAL (Parameter 46) to define the speed range of the drive when following an analog speed reference signal. P46 SPEED AT MAX SIGNAL This sets the speed at which the drive will run when it receives the maximum speed reference signal (10 VDC or 20 mA).
• Open TB-13A to TB-2 to disable PI mode and control speed directly by the method selected in STANDARD SPEED SOURCE (Parameter 05). For example, if Parameter 5 is set to 0-10 VDC, a speed pot could be used for manual speed control when the PI mode is disabled. NOTE 1: When TB-13A is closed to TB-2, the drive’s display will flash “PIC” to indicate the drive is in PI Control mode. When TB-13A is opened, the display will flash “SPd” to indicate the drive is in Speed Control mode.
B.8 TUNING THE PI CONTROL Once the PI control is configured properly, it needs to be tuned in order to maintain the process setpoint. First, set the Integral Gain (Parameter 65) to zero, and increase the Proportional Gain (Parameter 64) until the system becomes unstable, then lower the gain until the system stabilizes again. Set the Proportional Gain about 15% less than that value that stabilizes the system.
LEESON Electric Variable Speed AC Motors Drives EC DECLARATION OF CONFORMITY In accordance with EN45014:1998 Applied Council Directive(s): EMC Directive 89/336/EEC, as amended: 92/31/EEC and Low Voltage Directive 73/23/EEC, as amended: 93/68/EEC We LEESON Electric 2100 Washington Street Grafton, WI 53024 U.S.A.
4914S/7.
