User`s manual

http://www.adtechcn.com 22

) Connection for output signal

The switch value of this control system is output through the open collector, with JC1 as both the shared terminal

and GND of the loaded power source. In actual use, the operator should connect the Pin 20 of JCI to +24V, and the

output point is enabled at low level. The load should be connected to somewhere between +24V and the output

point. The internal output circuit is safeguarded by mechanisms of over-current protection, over-voltage protection,

short circuit protection, overheat protection and follow-current protection. However, if an external sensible load is

connected, like the relay, you should connect a follow-current diode at the two ends of the relay, as shown in the

figure below:

Note: Recommended voltage: < 24V (preferably not over 30V). Never reversely connect the negative

and positive poles, nor allow the load to have short circuit. Otherwise, the module might be damaged.

) Connection for communication signal

Communication mode RS232

Control Card