Watlow-electric Micro-Based Autotuning Control SERIES 980/985 Bedienungsanleitung PDF herunterladen (Seite 34)

Appendix

Control

Mode

•

Single set point, non-ramping.

Single input, dual outputs.

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

Cool/Cool, Heat/Alarm, Cool/Alarm

Outputs independent, or related via

deadband

for Heat/Cool.

ON/OFF:

3°F

.7°C

switching hysteresis or

0.3°F

0.l7°C

for

0.10 Units

PID

parameters:

Proportional band: 0 to

999°F/0

555°C(3

digit only)

0 to

999°F/0

555°C

or 0 to

99.9°F/0

55.5°C

(3 or 4 digit)

Reset: 0.00 to 9.99 repeats per minute.

Rate: 0.00 to 9.99 minutes.

Cycle time: 1 to 60 seconds.

Deadband:

±99°F,

±99

units or

±55°C

±9.9°F,

±9.9

units or

±5.5°C

for 0.1 decimal units)

Operator Interface

Membrane front panel.

Three or four digit 0.3”

(8mm)

LED diiplays.

MODE, AUTO/MANUAL, UP, and DOWN keys.

Dual digital displays.

Input

Thermocouple,

RTD,

and electrical process input.

Automatic cold junction compensation for thermocouple.

RTD input 2 or 3 wire, platinum, 100 ohm

0°C

user selectable, calibrate

to JIS curve #3916 (0.003916(0.003916ohm/ohm/°C or DIN curve #3850(0.003850ohm/ohm°C

Sensor break protection de-energizes control output to protect system or

selectable

bumpless

transfer to manual operation.

Grounded or ungrounded sensors.

°F/°C

or process variable units are user selectable.

Operating ranges user selectable.

J t/c:

32 to

999°F

or 0 to

750°C

(3 Digit)

32 to

1382°F

or 0 to

750°C

(4 Digit)

K t/c:

-328 to

2282°F

or -200 to

1250°C

t/c:

-328 to

662°F

or -200 to

350°C

N t/c:

32 to

2282°F

or 0 to

1250°C

PT 2

(Platinel2)

32 to

2543°F

or 0 to

1395°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:

-500 to 3500 units

4-20mA:

-500 to 3500 units

WATLOW Series 980/985 User’s Manual

Appendix

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