PCR-300 PCR-300 RC Installation and Operating Instructions EB-PCR-04 EN1H-1924GE23 R1207 Electronic refrigeration control
TABLE OF CONTENTS 11 Unpacking the unit and conditions of use 3 12 General instructions 3 13 Use and function 3 3 4 3.1 Use for the purpose intended 3.2 Function 14 Safety 4 4 5 4.1 Sources of danger 4.2 Safety precautions 15 Installation and commissioning 5.1 Mechanical installation 5.2 Electrical installation 5.3 Setting the DIP switch for the emergency setpoint and clock back-up battery 16 Operating of the controller 6.1 6.2 6.3 6.4 6.
1 Unpacking the unit and conditions of use Before and when unpacking the unit, make a visual inspection to identify any possible damage which may have occurred during transportation. Please look for loose parts, dents, scratches, etc. Report any damage immediately to the freight company. (Please see “Conditions if damage has occurred”.
I The controller must not be used as a safety cut-out device or excess temperature limiter. If the controller is used for purposes other than those stated here, it shall not be considered to be use for the purpose intended. I Only connect sensors supplied with the unit. If a replacement sensor is required, only use sensors of the same type (part no. H61007).
I I I Never expose the unit to excessive heat, dust and vibrations. Avoid knocks and pressure loads. If the housing is damaged, there is a risk of an electric shock causing death or injury. If the unit cannot be operated without the risk of danger, it must be taken out of service and precautions taken so that it cannot be switched on again unintentionally.
a) housing with 2 mounting tabs: open out the lateral mounting tabs; clip the unit on the 35 mm rail and press tabs in again. b) housings with 1 mounting tab: put housing on the upper 35 mm rail. Clip the unit on the 35 mm rail, lower tab clips on the rail automatically. To remove the unit from the rail press in lower mounting tab with a screw driver, lift unit. I Mounting of sensor: I Use a cable clamp to secure sensor T1 in a suitable position.
Terminal: 1-2 3-4 10 - 12 13 - 15 17 - 18 20 - 21 23 - 24 Description: T1 = Cold store sensor T2 = Evaporator sensor Mains = Power supply V = Compressor contactor (cooling) Ev = Evaporator fan (contactor) Alarm = Remote alarm indicator; indicator lamp or contactor (with RC-element) Def = Defrost heating (contactor) or hot gas valve ☛ The unit is equipped with an opto-decoupled electronic alarm output. Take note of the alarm output limit values. I Supply voltage: Max. 250 V AC.
5.3 Setting the DIP switch for the emergency setpoint and the clock back-up battery Carefully lift the housing cover off the side, using your fingers. I Selection of the emergency setpoint for the cold store temperature: This will be activated if the data in the memory is lost and alarm AL1 is activated. This sets all program parameters to the preset value. The cold store temperature setpoint can be preset to +4 °C or –18 °C, as desired.
☛ Note: It takes approximately 24 hours for the battery to achieve its full back-up capacity. The battery will provide cover for a power failure of approximately 1 month. 6 Operation of the controller Front view of controller: 6.1 Switching on the operating voltage The controller is started by means of a control switch provided by the customer. The first time the controller is started, pre-programmed setting values are used which at later point can be adapted for individual requirements.
Three spot indicators show the switching status of the relays during operation: Pos. 1: On : Compressor relay on. Off: Compressor relay off. Flashes: Compressor start-up delay E05 active. Pos. 2: On : Evaporator fan relay on. Off: Evaporator fan relay off. Pos. 3: On : Defrost relay on. Off: Defrost relay off. Flashes: Drain time E09 is running. 6.3 Key functions ☛ Never operate the keys with sharp objects (screwdriver or similar).
I I u Access the first programming level by pressing the and keys at the same time for 5 seconds. u Then use the and keys to access the parameters to be changed. u Access the second programming level by pressing the and and keys simultaneously for 5 seconds. To exit from the programming levels and save the data, press the key after the last input parameter. If no key is pressed in either of the programming levels for 10 minutes, this mode will be exited without the data being saved.
If the set temperature difference E03 is negative, an alarm is given if it is too cold in the refrigerated area, e.g. E03 = –10 K, cold store setpoint = –18 °C ➝ alarm at –28 °C in refrigerated area. If the set temperature difference E03 is positive, the alarm is given if it is too warm in the refrigerated area, e.g. E03 = +10 K, cold store setpoint value = –18 °C ➝ alarm at –8 °C in the refrigerated area. Attention: any change of the cold store setpoint valve changes also the alarm temperature.
6.7 Manual defrosting Press and hold down the key for 5 seconds. The manual defrosting process will be initiated. 7 Programming Access to the second programming level: I Press and hold down the , and keys at the same time for approx. 5 seconds (Display: E01 for PCR-300, E00 for PCR-300RC). I Use or key to select parameters. I Setting: Press and hold down the key. Adjust the setpoint value to the desired figure using the or key.
The time is entered in increments of 10 minutes in each case . Important: The times must be entered in ascending order. E03 E04 E05 E06 E07 E08 E09 E10 E11 E12 E13 E14 Alarm temperature difference –50 K to + 50 K 20 K Delay time – Alarm 0 to 99 mins. 10 mins. Compressor start-up delay 0 to 15 mins. 5 mins. Defrost type 1 or 2 1 1 = Electrical (compressor off) 2 = Hot gas (compressor on) Defrost limit temperature 0 to 50 °C 8 °C Defrost time limit 1 to 99 mins. 25 mins.
E15 E16 E17 E18 E19 Sensor calibration T1 (cold store) Sensor calibration T2 (evaporator) Operation of compressor relay if cold store sensor T1 is defective “On” time at E17 “Off” time at E17 –5 to +5 K 0K –5 to +5 K 0K 0 = Relay de-energizes 1 = Relay is permanently engergized 2 = Alternately energized/de-energized according to time set in E18 and E19. 1 to 99 mins. 1 to 99 mins. 2 15 mins. 15 mins. To exit from the programming mode: Press the key after inputting the last level. 7.
8 Maintenance The controller does not require any maintenance. It does not have any fuses so, if brief voltage spikes occur, the refrigeration system will not stop operating for a prolonged period. Once the disturbance has passed, the controller will automatically start up again. Cleaning the housing: Only a dry anti-static cloth may be used to wipe clean all plastic parts.
Clearing alarm: Press the key. All alarm messages, with the exception of AL2, are also reset by switching off the operating voltage. AL2 can only be reset using the key. 10 Problem solving Fault Evaporator fan does not switch on during cooling when the programmed setting of parameter E11 is set to position 3 (fan run-on). For PCR-300RC only: The real-time clock stops or indicates the wrong time in the event of a power failure. Cause Evaporator sensor T2 has fallen out of the fins. Remedy Refit sensor.
12 Technical data Mains voltage/frequency Rated wattage Display Resolution Measuring range Outputs Control response Alarm output Display accuracy Operating conditions Storage temperature Data back-up Emergency setpoint selection Sensor type – Number – Cable length – Range where cable can be used: – Accuracy Housing Protective rating Terminals Weight 230 V AC ± 10% / 50/60 Hz 2.5 watts 3-digit, 7-segment, red LED, 14.
EC Declaration of Conformity as defined in the EMC Directives 89/336/EEC and the EC Low Voltage Directives 73/23/EEC Product: Model designation: FLICA, electronic coldstore control PRC-300, PCR-300RC has been developed, designed and manufactured in accordance with the EC Standards listed above.
Automation and Control Solutions Honeywell GmbH Hardhofweg • 74821 Mosbach / Germany Phone: +49 (0) 62 61 / 81-475 Fax: +49 (0) 62 61 / 81-461 E-Mail: Cooling.Mosbach@honeywell.com www.honeywell-cooling.
