Curtis 1298 Manual, OS 11
5
2 — INSTALLATION & WIRING: High Current Connections
HIGH CURRENT CONNECTIONS
There are six high-current terminals, identified on the controller housing as
B+, B-, PUMP, U, V, and W.
Table 1 High Current Connections
TERMINAL FUNCTION
B+ Positive battery to controller.
B- Negative battery to controller.
PUMP Pump motor.
U Motor phase U.
V Motor phase V.
W Motor phase W.
Lug assembly
Six aluminum M6 terminals are provided. Lugs should be installed as follows,
using M6 bolts sized to provide proper engagement (see diagram):
• Place the lug on top of the aluminum terminal, followed by
a high-load safety washer with its convex side on top. The
washer should be a SCHNORR 416320, or equivalent.
• If two lugs are used on the same terminal, stack them so the
lug carrying the least current is on top.
• Tighten the assembly to 10.2 ±1.1 N·m (90 ±10 in-lbs).
High current wiring recommendations
Battery cables (B+, B-)
These two cables should be run close to each other between the controller
and the battery. Use high quality copper lugs and observe the recommended
torque ratings. For best noise immunity the cables should not run across the
center section of the controller. With multiple high current controllers, use a
star ground from the battery B- terminal.
Pump wiring (PUMP)
Cable lengths should be kept as short as possible. Use high quality copper lugs
and observe the recommended torque ratings. For best noise immunity the motor
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