Watlow Series 922 Retrofit Instrukcja Użytkownika Pobierz pdf (Strona 76)

WATLOW Series 922 User's Manual

Appendix

Specifications

Control Mode

• Microprocessor-based, user selectable modes.

• Dual inputs, dual control outputs per channel.

• 8 event outputs/1 event input/1 remote hold input.

• 99 step programmer with up to 10 profiles.

• Control outputs: User selectable as: Heat/Cool, Cool/Heat.

• Outputs independent, or related via deadband for Heat/Cool.

• ON/OFF: 3°F or 1.7°C switching hysteresis or 0.3°F or 0.17°C for 0.1°

Units .

• PID parameters per channel:

Proportional band: 0 to 500°C or 0 to 50.0°C for 0.1° Units.

Reset: 0.00 to 5.00 repeats per minute.

Rate: 0.00 to 5.00 minutes.

Rate band: 0 to 7 times proportional band.

Cycle time: 1 to 60 seconds.

• Deadband: ±36°F, ±20° C or Units ± 2.0°C for 0.1° Units.

• Auxiliary outputs: User selectable as:

• Events 1 & 2 selectable as alarms for Channels 1 & 2.

• Process or deviation value, per output.

• Alarms, latching or non-latching. When non-latching, control will have

3°F/1.7°C switching hysteresis or 0.3°F/0.17°C for 0.1° Units.

• Separate high and low values, per output.

Operator Interface

• Membrane front panel.

• Four digit 1/2" LEDs displaying actual process input value.

• LED indication of °C, °F, or process variable units.

• MODE, ENTER, UP, DOWN, and RUN/HOLD keys.

• Eight character alphanumeric display of operating data.

Input

• Thermocouple, RTD and electrical process input.

• Automatic cold junction compensation for thermocouple.

• RTD input 2 or 3 wire, platinum, 100 ohm @ 0°C, calibrated to JIS curve

#3916 (0.003916 Ω/Ω/°C), DIN curve #3850 (0.003850 Ω/Ω/°C).

• Sensor break protection de-energizes control outputs to protect system.

• Ungrounded sensors required..

• Operating ranges user selectable.

J t/c: 32 to 1382°F or 0 to 750°C

K t/c: -328 to 2282°F or -200 to 1250°C

T t/c: -328 to 662°F or -200 to 350°C

1° RTD: -328 to 1112°F or -200 to 600°C

0.1° RTD: -99.9 to 392.0°F or -99.9 to 200.0°C

0-5VDC: -99 to 1800 units

4-20mA: -99 to 1800 units

RH, 0-5VDC: 0 to 100% RH Vaisala sensor

• Calibration offset or input signal, ±90°F, ±50°C, ±50 PVU's, front panel

adjustable 9.0°F, ±5.0°C for 0.1°C Units.

• °F, °C, or process variable units are user selectable.

Appendix

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