CAB100 analog input channels are not surge protected. Therefore, note the following:
If CAB100 cannot be installed in an environment that meets the above criteria, use a suitable surge protection device that has been installed following local regulations.
|CAUTION Before connecting any external measurement device to CAB100, refer to the wiring instructions in the device-specific user documentation.|
|CAUTION Loop-powered and externally powered measurement devices cannot be connected in the same analog channel terminal block.|
Follow the steps below to connect a loop-powered measurement device, for example Vaisala Humidity and Temperature Transmitter Series HMT120 transmitter, to the CAB100 analog terminal block. Note that once connected, the loop-powered device is powered via the CAB100 analog terminal block.
De-energize the cabinet: switch off mains power and the circuit breaker located inside the cabinet.
Disconnect the analog channel 24 V DC power cable connector from the power block,
located on the right-hand side of the cabinet.
- Strip approximately 10 mm (0.4 in) from the analog output wires of the external measurement device.
Insert the wires in the push-in terminals of the CAB100 analog terminal block.