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6
Switching
The two terminals marked 'SWITCH'
(‘SW’) on the SS9007.3 Mini CT Meter
are connected internally
to an isolated DIAC switch with a 100mA current limit. The internal DIAC is typically used to control a
third-party external to control loads directly from the switchboard.
The example below shows a SS9007 Mini CT Meter being used to control an external contactor with
a 240V coil by switching the active
input to the contactor’s control
coil.
Figure 7: External contactor wired to SS9007 Mini CT Meter
The DIAC switch is limited to one switch state transition per second (e.g. the device cannot be
switched on and off at a rate faster than 0.5Hz).
A value of 1 in the ‘Switch State’ attribute of the On/Off Cluster indicates that the relay is closed
(connected), and a value of 0 indicates that the relay is open (disconnected).
