Watlow Electric Ramping and Profiling Microprocessor-Based Control SERIES 1500 - Manual (Page 80)

Specifications
General Features
Technical Reference
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Dual channel closed loop control.
Temperature and relative humidii.
51 time-based steps for ramping.
8 event outputs per step.
1 event input.
1 remote hold input.
Data communications interface optional.
Fully programmable parameters.
Membrane faceplate.
User-friendly, 1/2 DIN plug in chassis.
Three year warranty.
Control Mode
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Microprocessor-based user selectable modes.
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Dual channel with dual control outputs per channel.
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Control parameters user selectable.
Channels 1 & 2 as Temp & Temp
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Temp & RH.
On/Off switching hysteresis: 0.3°F or 0.3% RH with RTD or 0-5VDC inputs.
On/Off switching hysteresis: 3.0°F for T/C.
PID parameters per channel or per output.
Proportional band: 0-500°F or 060% RH.
Reset: 0.00-20.00 repeats per minute.
Rate: 0.00-5.00 minutes.
Rate band: 0-3 times proportional band.
Cycle time: 0-60 seconds.
Deadband: +20° On/Off or ±20° with PID.
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Alarm parameters user selectable.
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Latching or non-latching, both channels.
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Process high & low and deviation high & low per channel.
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51 steps each selectable as:
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Set point value.
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Ramping, value and time.
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Wait For, time or value
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Jump/Loop to another step.
Operator Interface
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Membrane front panel user-friendly I/2 DIN size.
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Four digit 1/2” LED’s displaying actual process input value.
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-Eight character alphanumeric 1/2” LED’s displaying set point, step number, and
various prompts and values for 1500.
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Nineteen LED’s to indicate various status conditions.
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Nine keys for control and value entry.
Input
. Thermocouple, RTD, and electrical % RH input.
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Automatic cold junction compensation for thermocouples.
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RTD input 2 or 3 wire, platinum, 100ohms Ω @ 25°C, calibrated to curve #3916
(0.003916ohms/ohms/°CΩ Ω Ω Ω
DIN curve calibration ##3850 (0.003850ohms/ohms/°C available upon request.
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Sensor break protection de-energizes output to protect system.
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°F, °C or % RH is user selectable, RTD version.
80 WATLOW Series 1500 User's Manual
Specifications, Appendix