
Introduction
CLS User’s Guide 9
Digital Inputs
Number:
8
Configuration:
8 selectable for output override, remote job selection.
Input Voltage Protection:
Diodes to supply and common. Source must
limit to 10 mA for override conditions.
Voltage Levels:
<1.3V=Low; >3.7V=High (TTL).
Maximum Switch Resistance to Pull Input Low:
1 Kohms.
Minimum Switch Off Resistance:
11 Kohms.
User-Selectable Digital Outputs
Number:
34
Operation:
Open collector output; On state sinks to logic common.
Current
≤
20 mA for 35 loads. Single load
≤
40 mA. I total
≤
700 mA.
Function:
Selectable as PID control or alarm/control.
Number of PID Control Outputs per PID Loop:
2 (max)
PID Control Output Types:
Time Proportioning, Distributed Zero
Crossing, SDAC, or On/Off
—
all independently selectable for each
output. Heat and cool control outputs can be individually disabled for
use as alarm outputs.
Time Proportioning Cycle Time:
1-255 seconds, programmable for
each output.
PID Control Action:
Reverse (heat) or direct (cool), independently
selectable for each output.
Off State Leakage Current:
<.01 mA to DC common.
System Digital Outputs
System Digital Outputs:
1 Global Alarm, 1 CPU watchdog.
Operation:
Open collector output; On state sinks to logic common.
Current
≤
20 mA for 35 loads. Single load
≤
40 mA. I total
≤
700 mA.
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