2 — INSTALLATION AND WIRING
1212 & 1212P Manual - Sep 2019
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pg. 10
SWITCHES AND OTHER HARDWARE
Keyswitch
e vehicle should have a master on/o switch to turn the system o when not in use. e keyswitch
provides logic power for the controller and for the other control input switches. It must be sized to
carry the 150 mA quiescent logic current plus the current necessary to drive the precharge function
(1.5 A for 0.5 seconds) and the status LED, horn, and any other accessories powered from the
keyswitch circuit.
Push Switch / Emergency Reverse Switch
A push switch can be used to electrically release the electromagnetic brake and inhibit driving.
Maximum speed in push mode is set by the Push Max Speed parameter. If a push input is applied at
power-up, it will not be acknowledged until it has been released and reapplied. e vehicle can enter
push mode only when it is in neutral or when the controller is not powered on.
In 1212P models only, this input (Pin 14) can be used for an emergency reverse switch (belly button
switch); see parameter Switch Normally Closed, on page 25. When the vehicle moves forward or
stops, if the emergency reverse switch is pressed the vehicle will decelerate to a stop (if it was moving)
and then be driven in the reverse direction.
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. is switch opens the electromagnetic brake coil circuit when the
mechanical brake release lever releases the brake from the motor sha. e open brake coil circuit
will register as a fault, inhibiting controller operation if an operator attempts to drive the vehicle
with the brake mechanically released. is safety feature ensures that the vehicle cannot be driven
when the brake cannot be engaged.
Mode Switch
A mode switch is used to select operation in Mode 1 or Mode 2. Typically, Mode 1 is programmed
for slower indoor driving and Mode 2 for faster outdoor driving; see Speed menu. e controller is
in Mode 2 when the mode switch is in the On position (input connected to B+). Leaving the mode
input oating or actively switching it O (pulling it to B-) puts the controller in Mode 1.
Emergency Stop Switch
is switch is used only in 1212P applications, and is shown in the wiring diagram (Figure 3b,
page 7). When the emergency stop button is pressed, the controller shuts o the EM brake output
regardless of vehicle speed, thus engaging the brake immediately. e emergency stop switch with
dual contacts is recommended to cut o KSI and battery power supply at same time. Also, low value
for the Key O Decel parameter (typically < 1.0 s) is recommended to produce fast response for
vehicle Emergency Stop.
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