Field Automation Systems ROC364 I/O CARD Instruction Manual Supplement Form A6097 May 2000 Part Number D301144X012
ROC364 I/O Card Revision Tracking Sheet May 2000 This manual may be revised from time to time to incorporate new or updated information. The revision level of each page is indicated at the bottom of the page opposite of the page number. A change in revision level to any page also changes the date of the manual which appears on the front cover. Listed below is the revision level of each page that corresponds to the front cover date. Page All Revision 5/00 Fisher Controls International, Inc. 2000.
ROC364 I/O Card About this Supplement This document, Form A6097, contains supplemental pages for the ROC364 Remote Operations Controller Instruction Manual (Form A4193). These pages contain a new section (Section 6) for Form A4193 to document the 32-channel ROC364 I/O Card. If you have a loose-leaf ROC364 manual and want to combine this supplement into that manual, simply place the following pages between Section 5 and Appendix A.
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ROC364 Instruction Manual Section: 6. — ROC364 I/O Card 6.1 SCOPE This section describes the 32-point Input/Output (I/O) Card used with the ROC364 Remote Operations Controller. This section contains the following information.
ROC364 Instruction Manual The ROC364 I/O Card provides these I/O channels: ♦ 12 Discrete Inputs – DIs. ♦ 4 Pulse Inputs – PIs. ♦ 8 Analog Inputs – AIs. ♦ 6 Discrete Relay Outputs – DOs. ♦ 2 Analog Outputs – AOs. The characteristics (called parameters) of the I/O channels are configured using the ROCLINK Configuration Software, which is documented in user manual A6051. Light-emitting diodes (LEDs) provide a visual indication as to the state of the discrete inputs, pulse inputs, and discrete outputs.
ROC364 Instruction Manual 6.3 INITIAL INSTALLATION AND SETUP If the I/O Card is not already installed onto a ROC364 MCU, use may use the following procedure. Note that this procedure is for a ROC that is not in service. For an in-service ROC, refer to Section 6.6.2 on Page 6-14. CAUTION Failure to exercise proper electrostatic discharge precautions (such as wearing a grounded wrist strap) may reset the processor or damage electronic components, resulting in interrupted operations.
ROC364 Instruction Manual 6.4 CONNECTING THE I/O CHANNELS TO WIRING Each I/O channel on the I/O Card is electrically connected to field wiring by a separate plug-in terminal block. In addition, the ROC enclosures provide a ground bus bar for terminating the sheath on shielded wiring. The following paragraphs provide information on wiring field devices to each type of I/O channel.
ROC364 Instruction Manual AI ROC-POWERED CURRENT LOOP DEVICE + T - Current Limit + +T = 12/24 VDC, 22 mA max. +SIGNAL = 4 TO 20 mA + COM 250 OHM +T - B1 to B8 DOC0098A-R32 Figure Section: 6-2. Current Signal on Analog Input When connecting the analog input channel to a voltage device, be sure to remove the 250-ohm resistor from the analog input terminal block.
ROC364 Instruction Manual 6.4.2 Analog Output Channels Analog outputs (AOs) provide a current output for powering analog devices. The ROC364 I/O Card analog output is a 4-20 mA loop signal. Two analog outputs are provided on the I/O Card. They are designated Point Numbers B9 and B10. The second and third terminal positions are connected as follows: + - Positive load Negative load A schematic representation of the field wiring connections to the analog output channel is shown in Figure Section: 6-5.
ROC364 Instruction Manual The discrete inputs provided on the I/O Card are configured as Point Number A1 to Point Number A12. They are connected using the second and third terminal positions as follows: + - Positive Discrete Input Common The discrete input operates by providing a voltage across terminals “+” and “-” (see Figure Section: 66), which is derived from internal voltage source Vs.
ROC364 Instruction Manual 6.4.4 Discrete Output Channels The discrete output channels are normally-open, single-pole, single-throw (SPST) relays. The relay contacts have a 5 amp rating. An LED lights next to the terminal block when the relay coil is energized. The channels are configured as Point Number B11 to Point Number B16. They can be software-configured as latched outputs, toggled outputs, or momentary timed outputs.
ROC364 Instruction Manual + - Positive Pulse Input (Sourced) Common To wire a pulse input channel (shown in Figure Section: 6-8), connect the “+” and “-” field wires to terminals “+” and “-” on the I/O Card pulse input channel. When the field device completes the circuit between the “+” and “-” terminals, an LED indicator next to the terminal block lights to show activity, and the optical circuitry is triggered, producing a signal to the ROC accumulator.
ROC364 Instruction Manual 6.5 TROUBLESHOOTING AND REPAIR If multiple I/O channels do not appear to be working, check the STATUS LED on the ROC364 I/O Card. This LED should be blinking slowly (cycles about 2 seconds long) to indicate normal communications with the MCU. If it stays off, check for power to the I/O Card. If power is okay, then the I/O communications is bad due to a problem with the connection to the card, the card itself, or the MCU.
ROC364 Instruction Manual 6.5.1 Analog Input Channels Equipment Required: Multimeter To determine if an Analog Input channel is operating properly, its configuration must first be known. Table Section: 6-1 shows typical configuration values for an analog input: Table Section: 6-1. Analog Input Channel Typical Configuration Values PARAMETER VALUE CORRESPONDS TO: Adj. A/D 0 % 800 1 volt dc across Rs (scaling resistor R1) Adj. A/D 100 % 4000 5 volts dc across Rs Low Reading EU 0.
ROC364 Instruction Manual 6.5.2 Analog Output Channels The Analog Output channel is used for current loop devices. Use the following procedure to check current loop installations. Equipment Required: Multimeter Personal Computer running ROCLINK Software 1. Taking appropriate precautions, disconnect the field wiring going to the AO channel terminations. 2. Connect a multimeter between the B and C terminals of the channel and set the multimeter to measure current in milliamps. 3.
ROC364 Instruction Manual 6.5.4 Discrete Output Channels Equipment Required: Multimeter Personal Computer running ROCLINK Software Place the Discrete Output in manual mode using the ROCLINK configuration software. Set the output status to “0” and measure the resistance across terminals B and C. A reading of 0 ohms should be obtained. Set the output status to “1” and measure the resistance across terminals B and C. No continuity should be indicated. 6.5.
ROC364 Instruction Manual 6.6 REPLACEMENT PROCEDURE 6.6.1 Impact on I/O Point Configuration When an I/O Card is replaced with another I/O Card, it is not necessary to reconfigure the ROC. If any points or their parameters need to be changed, you can use the ROCLINK configuration software to make the changes off-line or on-line.
ROC364 Instruction Manual CAUTION Failure to exercise proper electrostatic discharge precautions (such as wearing a grounded wrist strap) may reset the processor or damage electronic components, resulting in interrupted operations. CAUTION During this procedure all power will be removed from the ROC and devices powered by the ROC. Ensure that all connected input devices, output devices, and processes remain in a safe state when power is removed from the ROC and when power is restored. 1.
ROC364 Instruction Manual 6.7 I/O CARD SPECIFICATIONS Specifications POWER Input: Uses 0.57 W (supplied by MCU), excluding power consumed by I/O channels connected to field devices. Analog Loop: +T voltage from MCU (24 Vdc when I/O Converter Card is installed; otherwise, same as 12 or 24 Vdc power to the MCU). Available at “+T” terminal on each analog input channel. DISCRETE INPUTS Quantity/Type: 12 sourced discrete inputs. Field Wiring Terminals: “+” positive source voltage, “-” negative input (common).
