11. CONTROL AND ALARM OUTPUTS (Heating, Cooling or Alarm):
Relay outputs with Form A contacts
Contact Rating: 3 A @ 250 VAC or 30 VDC (resistive load)
Life Expectancy: 100,000 cycles at max. load rating.
(Decreasing load and/or increasing cycle time, increases life
expectancy.)
Logic/SSR Drive Outputs (T48 only):
Rating: 45 mA @ 4 V min., 7 V nominal
Triac Outputs (T48 only):
Type: Isolated, Zero Crossing Detection
Rating:
Voltage: 120/240 VAC
Max. Load Current: 1 Amp @ 35°C
0.75 Amp @ 50°C
Min Load Current: 10 mA
Offstate Leakage Current: 7 mA max. @ 60 Hz
Operating Frequency: 20 to 400 Hz
Protection: Internal transient snubber
12. MAIN CONTROL:
Control: PID or ON/OFF
Output: Time proportioning or linear DC
Cycle time: Programmable
Auto-tune: When selected, sets proportional band, integral time, and
derivative time values.
Probe Break Action (T48 only): Programmable
13. ALARM: 1 or 2 alarms (model dependent)(optional)
Modes:
Absolute high acting Absolute low acting
Deviation high acting Deviation low acting
Inside band acting Outside band acting
Heater break alarm
Reset Action: Programmable; automatic or latched
Standby Mode: Programmable; enable or disable
Hysteresis: Programmable
Probe Break Action (T48 only): Upscale
Annunciator: LED backlight for “A1”, “A2”
14. COOLING/SECOND: Software selectable (overrides alarm 2).
Control: PID or ON/OFF
Output: Time proportioning
Cycle time: Programmable
Proportional Gain Adjust: Programmable
Heat/Cool Deadband Overlap: Programmable
15. MAIN AND SECOND LINEAR DC OUTPUT: (optional)
Self-powered (active)
Main: Control or Re-transmission, programmable update rate from 0.1 sec
to 250 sec
Second: Re-transmission only, fixed update rate of 0.1 sec
Output **
Range
Accuracy *
(18 to 28°C)
Accuracy *
(0 to 50°C)
Compliance Resolution
0 to 10 V
0.10% of FS
+ 1/2 LSD
0.30% of FS
+ 1/2 LSD
10k ohm min. 1/3500
0 to 20 mA
0.10% of FS
+ 1/2 LSD
0.30% of FS
+ 1/2 LSD
500 ohm max. 1/3500
4 to 20 mA
0.10% of FS
+ 1/2 LSD
0.30% of FS
+ 1/2 LSD
500 ohm max. 1/2800
* Accuracies are expressed as ± percentages after 20 minute warm-up. Output
accuracy is specified in two ways: Accuracy over an 18 to 28°C range at 10
to 75% RH environment; and accuracy over a 0 to 50°C range at 0 to 85%
RH (non-condensing) environment. Accuracy over the wide signal range
reflects the coefficient of the internal circuitry.
** Outputs are independently jumper selectable for either 10 V or 20 mA. The
output range may be field calibrated to yield approximate 10% overrange
and a small underrange (negative) signal.
16. REMOTE SETPOINT INPUT: (optional)
Input type: 0/4 to 20 mA
Input Resistance: 10 ohms.
Overrange: -5% to 105%
Overload: 100 mA (continuous)
Scale Range: -999 to 9999 degrees or -99.9 to 999.9 degrees
Resolution: 1 part in 10,000
Accuracy:
At 25°C: ±(0.1 % of full scale +1/2 LSD)
Over 0 to 50°C range: ±(0.2% of full scale +1/2 LSD)
Reading Rate: 10/sec
Setpoint Filtering: Programmable Digital
Setpoint Ramping: Programmable, 0.1 to 999.9 degrees/minute.
-78-
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