User's Manual

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one Click! 205 to both Click! 202 modules. These blocks are also used to route the
DC power from both Click! 202 to the 5-position screw terminal on the left side of
the T-bus.
Controlling DC Power Distribution
The 24V DC+ and DC- (common) connections from the AC to DC power convertors
distribute power to the sensors via the Click! 222 System Surge Protection units
(see Figure 2.2). The DC power wires out of the System Surge Protection units are
connected to a 2.0 Amp circuit breaker for each SmartSensor Matrix. The circuit
breakers provide a convenient way to switch power to each sensor independently.
When a switch is off power distribution is disabled.
To enable or disable DC power distribution, use the following steps:
1. Switch the main circuit breaker (left side of upper din-rail).
2. Switch the individual circuit breaker (left side of each sensor’s set of
terminal blocks.
Tip
With either the main or individual circuit breakers, you will enable power
distribution when the switch is on. When the switch button is level with the
device housing (pushed in) the switch is on. When the switch button is raised
above the surface of the housing (popped out) the switch is off. If you cannot
visually whether the button is pushed in or popped out, you should be able to
feel it with your hands.