Curtis Instruments MultiMode 1230, Руководство пользователя, Страница: 27 / 70

21 Curtis 1230 Manual,
Rev. C
2 — INSTALLATION & WIRING: Switches, etc.
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C A U T I O N
Main Contactor
1230-2002, -2102, -2202, -23xx, and -24xx models
An external main contactor should be used with these models. The contactor
allows the controller and motor to be disconnected from the battery. This
provides a significant safety feature, because it means battery power can be
removed if a controller or wiring fault results in battery power being applied
to the motor inappropriately.
A single-pole, single-throw (SPST) contactor with silver-alloy contacts,
such as an Albright SW180 or SW200 (available from Curtis), is recommended
for use as the main contactor. The contactor coils should be specified with a
continuous rating at the nominal battery pack voltage.
The 1230 controller provides a low-side contactor coil driver (at J1 Pin 22)
for the contactor. The driver output is rated at 2 amps. An active clamping
circuit at 70 V provides fast turn-off and protects the driver from inductive
voltage kickback spikes.
The main contactor coil must be wired directly to the controller as shown
in Figure 4. The controller can be programmed to check for welded or missing
contactor faults and will use the main contactor coil driver output to remove
power from the controller and motor in the event of various other faults.
If
the main contactor coil is not wired to J1 Pin 22, the controller will not
be able to open the main contactor in serious fault conditions and the
controller will not be protected against reverse battery polarity.
1230-2001, -2101, and -2201 models
These models have an internal main contactor and therefore J1 Pin 22 is not used;
the internal main contactor provides all the protection features described above.
Keyswitch
The vehicle should have a master on/off switch to turn the system off when
not in use. The keyswitch input provides logic power for the controller. The
keyswitch provides current to drive the main contactor, electromagnetic brake,
and valve solenoid coils and must be rated to carry these currents.
Interlock, Forward/Reverse, Mode, Emergency Reverse,
Inhibit, and Auxiliary Input Switches
These input switches can be any type of single-pole, single-throw (SPST) switch
capable of switching the battery voltage at 10 mA.
The interlock switch—which is typically implemented as a tiller switch,
deadman footswitch, or seatswitch—provides a safety interlock for the system.
Typically the Emergency Reverse switch is a momentary switch, active
only while it is being depressed.
The emergency reverse and inhibit inputs can be configured independently
to accept normally open or normally closed switches.