3 How to Install Calorimeter
3-3. How to connect wire
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CAUTION
Contact output 3 (SSR)
Contact output 3 is SSR output.
AC power is required to activate Contact output 3
Method of changing the output from SSR to dry contact
Add an external relay outside of OHC-800.
Contact output 3 is SSR output. (Load specification: 75 VAC - 264 VAC, Electronic current 20mA - 1A)
For this reason, the power terminal unit with DC specifications can not be used as it is when SSR
output is taken into.
In this case, add an external AC relay outside of OHC-800 and change the output from SSR to dry
contact.
< Wiring diagram >
OHC-800
(5) (6)
Relay
～
～
100VAC
Input unit
Hazardous area
Non hazardous area
Install the AC relay into non hazardous area
Use a relay that coil specification is voltage 75 VAC - 264 VAC, electronic current 20mA - 1A.
Example) MK3ZP (OMRON): Rating current 23.1mA (100VAC, 60Hz)
