Curtis Instruments MultiMode 1230, Manual, Page: 39 / 70

Curtis 1230 Manual,
Rev. C
33
3 — PROGRAMMABLE PARAMETERS:
Emergency Reverse Parameters
EMERGENCY REVERSE MENU
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Wiring Check
OFF
/
ON
When programmed On, the wiring check tests for continuity from the
emergency reverse check output (J1 Pin 16) to the emergency reverse
input (J1 Pin 15); see Fig. 4, page 8, for the recommended wiring.
This parameter applies only to systems that include the emergency
reverse feature. If emergency reverse is not being used, this parameter
should be programmed Off.
Speed
10–100 % Defines the maximum speed during emergency reverse.
Direction Interlock
OFF
/
ON
As soon as the emergency reverse button is released, the controller sets
the drive output to zero regardless of whether a direction or throttle is
still being requested. The direction interlock parameter defines how the
controller will return to normal operation from this point.
If it is programmed On, the operator can either open both direction
switches or cycle the interlock switch to enable normal operation.
If it is programmed Off, the only way for the operator to resume
normal operation is by opening both direction switches and cycling the
interlock switch.
Time Limit
0.0–10.0 sec. Can be used to provide a time limit on emergency reversing. The control-
ler will set the drive output to zero at the end of the programmed time limit,
even if the emergency reverse button is still being pressed. If you prefer
emergency reversing to continue as long as the emergency reverse button
is being pressed, program the time limit parameter to 0.0.
Accel Rate
0.1–5.0 sec. Sets the rate at which the controller accelerates in the opposite direction
when emergency reverse is activated. Higher values represent slower
acceleration and therefore gentler response. More abrupt response can be
achieved by decreasing the acceleration rate (i.e., by setting the rate to a
lower value).
Switch Normally Closed
OFF
/
ON
When a normally-closed type of emergency reverse switch is used, this
parameter must be programmed On.
In order to use the emergency reverse wiring check feature, a
normally-open type of switch is required and this parameter must therefore
be programmed Off.