User manual HONEYWELL PCR 100

[. . . ] Safety tests have been performed in the factory on all equipment in accordance with EN 60335-1 (DIN VDE 0700 T500). 3 Use and function 3. 1 Use for the purpose intended ¼ This controller is designed to control ambient temperatures or media temperatures in refrigeration or heating systems. ¼ The controller must not be used as a safety cut-out device or excess temperature limiter. 3 If the unit is used for purposes other than those stated here, it shall not be considered to be use for the purpose intended. ¼ Only connect sensors supplied with the unit. If a replacement sensor is required, only use sensors of the same type (Part No. [. . . ] All shields must be routed at the side of the controller to one earth/protective potential. The extension cable shield must not be connected on the sensor side, otherwise bonding currents may occur via the shielding. ¼ The controllers are designed respecting the highest degree of immunity to interference. If the local interference level exceeds the immunity data might get lost (AL1 in display) and the controllers switches to the preprogrammed setting values. This is not a mulfunction of the controller. In such cases the means to suppress interference have to be improved (RC-elements, shielded lines). 6 Operation of the controller Front view of controller: 7 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. In the event of an alarm, the most recent alarm message (e. g. AL1) and the cold store temperature are displayed alternately. Two spot indicators show the switching status of the relays during operation: Pos. 3: On : Defrost interval is active ­ relay de-energized. 6. 3 Functions of keys Never operate the keys with sharp objects (screwdriver or similar). Display of setpoint value Clear alarm messages Manual defrost initiation Display of time until the next defrost Display limit value for excess temperature (cold store sensor T1) Press and hold down key. Press key. (If the sensor is faulty, switch mains voltage ON/OFF). Press and keys in sequence and hold both down. Press key. 8 ¼ ¼ ¼ ¼ ¼ Input values are always changed using the or key with the key held down. the switching difference is shown as "E" with a 2-digit number, e. g. Access to the programming level is by pressing the and key at the same time for 5 seconds. The parameters to be changed can then be accessed by pressing the and keys. [. . . ] contact, 5 A, 230 V AC, resistive load, (alarm) Caution: For PCR-110 the total current via the common relay connection, terminal no. 5, must not exceed 10 A. 13 Control performance: Display accuracy: Operating conditions: Storage temperature: Data back-up: Sensor: ­ Sensor cable length: ­ Range where cable can be used: ­ Sensor accuracy: Housing: Two-step ± 0. 5 K internal, ±1 digit, at 25 °C 0 to 50 °C, 30 to 85 % R. H. , excluding dew ­20 to +80 °C Non-volatile memory (EEPROM) 1 PTC 2. 5 m ­30 °C to +80 °C not fixed ­40 °C to +80 °C fixed ±2 % PCR-100: L x W x H = 85 x 70 x 61 mm PCR-110: L x W x H = 70 x 74 x 32 mm ABS plastic, self-extinguishing (UL 94 V0) Protective rating: Terminals: Housing: IP 20, Front panel: IP 52 Class of protection 2 10 A screw-type terminal strips, with wire protection, tightening torque 0. 6 Nm Max. core cross section 1. 5 mm2 PCR-100: Approx. sensor). Weight: Only operate the unit in dry places. Errors in the technical data are excepted. [. . . ]