3-22 | ni.com
Chapter 3 External Control
Long-Distance Wiring
When you are wiring over a great distance, use a small relay and extend the coil side of the relay.
Figure 3-22. Long Distance Wiring.
External Monitoring
The J1 connector has monitor outputs for the output voltage and the output current.
Caution Shorting V MON and I MON to A COM may damage the RMX
programmable power supply.
Monitor Output Rating
• Output impedance: 1 kΩ or less. Maximum output current: Approximately 10 mA.
The monitor output signals are used to monitor the DC voltage (mean value). They cannot be
used to accurately monitor the AC components (such as ripple and transient response waveform)
of the actual output voltage or current.
Table 3-3. External Monitoring of J1 Connector Output Voltage and Output Current
Pin Signal Name Description
10, 19, 23, A COM Remote control input common
Output monitor common
25 V MON Monitor output of output voltage
0 to approximately 5 V (CF08: Lo) or
0 to approximately 10 V (CF08: Hi) for
0 to the rated output voltage
24 I MON Monitor output of output current
0 to approximately 5 V (CF08: Lo) or
0 to approximately 10 V (CF08: Hi) for
0 to the rated output current
S
Extend this line.
Relay
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