Specifications

Curtis PMC 1223/33, 1225/35, 1227/37 Manual
25
Brake Release Switch (Brake Coil Disable Switch)
If a brake release lever is used to release the electromagnetic brake mechanically,
a brake coil disable switch is recommended. This switch opens the electromag-
netic brake coil when the mechanical brake release lever releases the brake from
the motor shaft. The open brake coil will register as a fault, inhibiting controller
operation if an operator attempts to drive the vehicle with the brake mechanically
released. This safety feature ensures that the vehicle cannot be driven when the
brake cannot be engaged. NOTE: A brake coil disable switch—or a self-resetting
brake—is required to conform with TÜV regulations.
Inhibit
The inhibit input can be used to inhibit controller operation for any reason.
Typically it is used during battery charging, as shown in Figure 16. The inhibit
input overrides all other controller inputs and is active when low (i.e., when
within 1.0 V of B-). The input can be left floating when not engaged; it does not
need to be pulled high.
2 — INSTALLATION & WIRING: Switches, etc.
Panel Indicator LEDs
The 1223/33, 1225/35, and 1227/37 controllers have the capability to drive
indicator LEDs. These LEDs can be used as panel indicators to tell the operator,
at a glance, the status, direction, and mode of the controller.
Status LED — This LED always indicates whether the controller is
powered on or off. The Status LED will also provide
diagnostics information via flash codes. See Section 7
for Status LED operation and fault codes.
Direction LED — This LED is lit when the controller is in reverse.
Mode LED — This LED is lit when the controller is in Mode 1.
Fig. 16 Wiring to inhibit
operation during battery
charging.
16 15 14 13 12 11 10 9
87654321
Pin 6
Inhibit
PIN KEY
POWER
FUSE
B+
B-
BATTERY
CHARGER
+-
to controller B-
to controller B+