User manual HONEYWELL PCR 310

[. . . ] ¼ The mains transformer supplied with the equipment is only to be used with the PCR-310 and PCR-410 controller. If the controller and/or transformer are used for purposes other than those stated here, it shall not be considered to be use for the purpose intended. If a replacement sensor is required, only use sensors of the same type (part no. ¼ The controller is not intended for use in vehicles because the possible operating voltage ranges, interference level and environmental operating conditions exceed the limits for which the controller can be used. [. . . ] If the local interference level exceeds the immunity data might get lost (AL1 in display) and the controllers switches to the preprogrammed setting values. In such cases the means to suppress interference have to be improved (RC-elements, shielded lines). 5. 3 Setting the DIP switch for the emergency setpoint The DIP switch is at the side of the controller. 8 ¼ Selection of the emergency setpoint value for the cold store temperature: This will be activated if the data in the memory is lost and if alarm AL1 is activated. The cold store temperature setpoint can be preset to +4 °C or ­18 °C, as desired. This ensures that chilling systems with temperatures above zero do not freeze and deepfreeze installations do not thaw. DIP switch 1, Pos. : off: Setpoint value at +4 °C for emergency operation. DIP switch 1, Pos. : on: Setpoint value at ­18 °C for emergency operation. Advisable for deepfreezers. 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 a later point can be adapted for individual requirements. If alarm "AL 2" (temperature in refrigerated chamber too high or too low) is displayed when the controller is switched on, this can be cleared by pressing the key. 6. 2 Display During normal operation the current cold store temperature is displayed. It is measured with cold store sensor T1. 9 In the event of an alarm, the most recent alarm message (e. g. Three spot indicators show the switching status of the relays during operation: Pos. 6. 3 Key functions Never operate the keys with sharp objects (screwdriver or similar). Display of setpoint temperature: Clear alarm messages: Evaporator temperature display: Manual defrost initiation: Display of time until the next defrost: Display limit value for excess temperature alarm: (cold store sensor T1) ¼ ¼ Press and hold down key. Press key. Press key for 5 seconds. Press and keys in sequence and hold both down. Press key. Change input values by using the and keys with the key pressed down. the differential, are indicated by "E" and a 2-digit number, e. g. "E01". 10 ¼ ¼ ¼ The input parameters are grouped together in two programming levels: Access the first programming level by pressing the and keys at the same time for 5 seconds. Access the second programming level by pressing the and and the key 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. [. . . ] 2. 5 watts 3-digit, 7-segment, red LED, 14. 2 mm 1K ­55 to +50 °C 1 relay with changeover contact 8 A, 230 V AC, resistive load (cooling) 1 relay with N. O. contact, 8 A, 230 V AC, resistive load (defrost heating) 1 relay with N. O. contact, 8 A, 230 V AC, resistive load (fan control) only PCR-410: 1 relay with N. O. contact, 8 A, 230 V AC, resistive load (remote alarm control) Rated wattage: Display: Resolution: Measuring range: Outputs: Caution: The total current via the common relay connection, terminal no. [. . . ]