Campbell Scientific SDM-CD16AC 16-Channel ac/dc Relay Controller - Manual (Page 10)

SDM-CD16AC 16 Channel AC/DC Controller
Device
Neutral (-) Hot (+)
NO
NC
COM
FIGURE 4. Typical Wiring Application
4.1.3 Motor Control
The SDM-CD16AC is a UL approved Start/Stop motor controller. In the
figure below, a typical 5 Amp 115 VAC relay contact circuit shows how to
control a three phase motor starter in a Motor Control Center (MCC).
Typically, the datalogger will automatically command the appropriate relay to
energize the motor starter. The relay in the SDM-CD16AC will remain latched
until the datalogger program commands that the motor be turned off, at which
time the relay will open the circuit to the motor starter and the motor will stop.
The SDM-CD16AC can be used to control three phase pump motors, air
blowers, and large control valves in the same fashion.
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