Manual
HM1016ER1
Installation Guide
Harsen
®
Page 48/54
8.2.6The connection of configurable digital inputs
There are 5 configurable Inputs, which used for monitoring and control status, all of the inputs adopt
electrical isolation, and controller internal provides 8vdc power supply, no need an additional power.
NOTE:
The terminal #31 is the common port for the configurable inputs and it is
short connected to power negative (terminal #33) inside the controller.
The maximum acceptable resistance for each input is 10K
Ω
, it means
whether the switch of loop circuit is closed or not, the status monitored by
controller are all open when the resistance in loop circuit exceeds 10K
Ω
,
status monitored by controller are all close when the resistance in loop
circuit falls below 10K
Ω
. To avoid error monitoring of switch status, do pay
attention to the wiring resistance and switch on resistance in loop circuit,
and total resistance must be less enough.
CAUTION:
Terminal #31 on controller should not be used as the negative input of
battery.
