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SSR INPUT VOLTAGE DROP (VDC)
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SSR DRIVE CURRENT vs SSR VOLTAGE DROP AND POWER SUPPLY
9.3 Vernier Output - Master/Slave Configuration
In a Master-
Slave Configuration, the master unit’s Vernier output should be
used for driving the SSR or SCR Power Control.
10. Electrical Specifications
Power Input
-
24VAC -15/+15% 50/60Hz < 10VA.
24V Thermostat Power
-
Aux Output Rated at
24VAC @ 500mA max.
Brown Out Protection
-
Stages restart from zero upon loss of power.
Command Inputs
-
0-5V, 1-5V, 0-10V, 2-10V, 0-20mA, 4-20mA, 0-135Ohm.
Selectable via dipswitch.
Stages
-
Selectable from 1 to 16 stages via dipswitch. More than 8
stages requires an additional NWVS setup for slave operation.
Stage Outputs
-
30 VAC @ 1.0A SPST Mechanical Relays w/MOV protection,
up to a max of 5A total for all of the stages. Up to 8 stages per
board. Use a Class 1 ( properly fused ) or Class 2, CSA or UL
recognized transformer for power supply & relay outputs.
Vernier Output
-
Selectable via dipswitch # S1-6:
Time Proportioning (S1-6 OFF):
Current limited ~24VDC
nominal. Time Proportioned 4 second cycle time for driving an
SSR.
Analog (S1-6 ON):
0-10VDC output for driving an SCR power
control. 10VDC output tolerance is +5/-8% at 24VAC power.
10VDC output tolerance is +5/-25% at 20VAC power.
Slave Output
-
0-5V
output for expanding beyond 8 stages.
Stage Output Modes
-
LIFO or FIFO Selectable via dipswitch.