Horner APG QX751 OCS - Manual (Page 22)

CH. 4 MAN0890-02-EN
August 20, 2009 Page 22 of 96 ECN # 979
Figure 4.1 – Two-Point Ground Connection Test
4.5
QX751Primary Power Port
Table 4.1 – Primary Power Port Pins
Signal Pin Description
V+ Input power supply voltage
V- Input power supply ground
Frame Ground
Note: Power Supply Voltage Range is from 24VDC
±10%.
METAL WATER PIPE OR
OTHER GOOD GROUND
GROUND ROD
GROUND
DISCONNECTED
FROM SERVICE
GROUND RESISTANCE METER