GE Industrial Solutions POWER LEADER ModBus Monitor - Manual (Page 16)

POWER LEADER Modbus Monitor
Chapter 2 – Installation
10
back of the panel, apply the lock washers and mounting
nuts (included with the Monitor) to the studs. Hand
tighten them with a small wrench.
Be sure to allow clearance behind the unit so that the fan
can operate effectively and along the bottom of the unit
where the ventilation vents are located. A minimum of
0.25 inch must be allowed.
 GLD
 LQ
 LQ
 LQ
 LQ
 LQ
 LQ
Figure 9. Cutout pattern for mounting the Monitor.
Control Power Connections
Control power connections are made on the side of the
case. The connectors are labeled H+, N-, and GND. The
appropriate power cable terminations are spade lugs on
AWG #12–18 wire. See Table 2 for control power
voltage ranges. Hand-tighten connection screws with a
Phillips head screwdriver.
Grounding
The Monitor chassis should be connected to earth
ground for personnel safety reasons. Connect earth
ground to the green-colored grounding screw on the side
of the Monitor enclosure. Earth ground connection
requires #14 AWG or thicker wire and a ring or spade
lug.
NOTE: Failure to properly connect earth ground to
the Monitor may result in inconsistent or noisy
network communications.
WARNING: Failure to properly connect earth
ground may result in voltages hazardous to
personnel and equipment being present at the
Monitor enclosure.
RS-485 Connection(s)
On the side of the Monitor case are two five-pin
connectors labeled Modbus Segment A and Modbus
Segment B.
NOTE: Both connectors are present and labeled
regardless of whether the individual Monitor is a single
or dual port version. In the single port version, the
Segment B connector is disabled.
Mating connectors (one for each segment) are included
with the Monitor for customer connection. The pinout
for assembling the mating connector is shown in Figure
10. If the Monitor is to be the first or last device on the
RS-485 network, it must be terminated using the
enclosed terminating resistor. Place the resistor between
the appropriate + and - connections on the mating
connector. (See below for details on RS-485
termination).