Franklin Electric submonitor, Owner'S Manual

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5
SubMonitor Wiring
1. Read this section of the manual thoroughly.
2. Disconnect power & verify that power is off before installing SubMonitor.
3. Install SubMonitor as illustrated in the wiring diagram in Figure 1.
SubMonitor may be mounted above or below the contactor as shown. To
use the DIN rail mount,
fi rst attach the DIN rail clip to the bottom of the
base unit. Then secure the SubMonitor to the DIN rail. Attach to the top
of the rail
fi rst, then apply downward pressure until the DIN clip snaps
into the bottom of the rail.
4. Connect three phase power leads to the plug-in connector L1, L2,
and L3 terminals as shown in fi gure 2. Wire strip length is 5/16” (8mm).
The L1, L2, L3 connections must be made to the line side of the
cables passing through the sensor coils as shown in
fi gure 2.
(This is
because the overheat signal from the motor must fi rst pass through the
sensor coils, then into the L1, L2, and L3 terminals of SubMonitor).
5. Connect the control circuit wires to the M1 and M2 plug-in connector
terminals, and signal circuit wires to the A1 and A2 plug-in connector
terminals (Figure 3). Tighten all terminals to 4.5 in-lbs and install the plug-
in connectors into SubMonitor (plugs are keyed to avoid misconnection).
6. Pass the T1, T2, and T3 motor power leads through the sensor coils in
the base unit.
7. NOTE: 6-lead Wye-Delta motors - for a 6-lead motor with a Wye-Delta
control panel, each sensor coil must encircle a pair of leads which connect
to the same line in the delta connection, such as T1-T6; T2-T4 or T3-T5.
8. As an option, the SubMonitor display unit is detachable and can be
mounted on the exterior of the panel door (requires a small punch-out,
gasket and two screw holes). Use the extension cable provided in the kit
to connect the base unit to the display unit.
Lightning Arrestor
1. Install the lightning arrestor and connect line leads to the line side of the
contactor as shown in Figure 4.
2. The lightning arrestor ground lead must be connected to water strata
ground to provide suitable surge protection. Connect metal-to-metal to
well casing, drop pipe, or to the submersible motor with wire the same
size as drop cable wires.
NOTE: Refer to Franklin Electric
Submersible Motor, Application,
Installation and Maintenance (AIM)
manual for further discussion of
lightning protection.
FIGURE 4