Curtis 1243GEN2 Manual
8
2 — INSTALLATION & WIRING:
Controller
Standard Power Wiring
Motor armature wiring is straightforward, with the armature’s A1 connection
going to the controller’s B+ bus bar and the armature’s A2 connection going to
the controller’s M- bus bar.
The motor’s field connections (S1 and S2) are less obvious. The direction
of vehicle travel with the forward direction selected will depend on how the
motor’s S1 and S2 connections are made to the controller’s two field terminals
(S1 and S2) and how the motor shaft is connected to the drive wheels through
the vehicle’s drive train.
CAUTION:
The polarity of the S1 and S2 connections
will affect the operation of the emergency reverse feature. The forward and
reverse switches and the S1 and S2 connections must be configured so that the
vehicle drives away from the operator when the emergency reverse button is
pressed.
Standard Control Wiring
Wiring for the input switches and contactors is shown in Figure 3; the pins are
identified on page 6. In the standard wiring configuration, the auxiliary driver
at Pin 8 is used to drive an electromagnetic brake.
The main contactor coil must be wired directly to the controller as shown
in Figure 3. The controller checks for welded or missing contactor faults and
uses the main contactor coil driver output to disconnect the battery from the
controller and motor when specific faults are present. If the main contactor coil
is not wired to Pin 4, the controller will not be able to open the main contactor
in serious fault conditions and the system will therefore not meet EEC safety
requirements.
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C A U T I O N
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