SOLO Basic Temperature Controller User Manual
4–3
Chapter 4: Controller Inputs and Outputs
1st Ed. 02/19
Relay Output
The relay used for the relay output in the SLB4848 is rated at a maximum 250
VAC and 5A resistive load. A secondary 250 VAC 3A resistive load output is
available when using a model with alarms in one of the dual output modes.
The operation cycle of the Relay output is controlled by two factors, Output
Level and Output Period.
Output Level
Output Period
ON
OFF
For example, when the Output Level is 60% and the Output Period is 10
seconds, the output relay is turned on for 6 seconds in the cycle.
There are six parameters that define these two factors.
Output Level
Output 1 Level (
out1
), Range: 0.0 to 100%
Output 2 Level (out2), Range: 0.0 to 100%
Output Period
Output 1 Heating Period (
o1-H
), Range: 0.1 to 60 seconds
Output 1 Cooling Period (
o1-C
), Range: 0.1 to 60 seconds
Output 2 Heating Period (
o2-H
), Range: 0.1 to 60 seconds
Output 2 Cooling Period (
o2-C
), Range: 0.1 to 60 seconds
Note: The electrical life expectancy of the relay output is 100,000 cycles. To
maximize the life of the relay output, set a longer time value for the Output Period.
Voltage Pulse Output
The Voltage Pulse output generates a high level pulse of 12 VDC nominal and
low level pulse of 0VDC. It can supply up to 40ma.
The operation cycle of the Voltage Pulse output is controlled by two factors,
Output Level and Output Period.
1 cycle
Output Level
Output Period
12 VDC
0 VDC
For example, when the Output Level is 60% and the Output Period is 10
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