3
STOP
OL’s
3
4
M
SHORT-STOP
Terminals
M
Control Transformer
X1
START
X2
START
X2
STOP
STOP
OL’s
3
4
M
START
SHORT-STOP
Terminals
STOP
R
OL’s
3
4
F
F
SHORT-STOP
Terminals
Reverse
F
R
R
X1
Forward
X2
less.
Any application requiring frequent or severe braking, or
operation more often than two stops per minute may
require a different model SHORT-STOP.
Applications involving exceptionally high inertia, such as
press flywheels, extractors, etc may require models with
longer than the standard 15-second maximum braking
time.
For information on applications such as these, please
consult the factory or your local sales representative.
All SHORT-STOP units may be used in normal ambient
temperatures. The maximum temperature at the hottest
part of the heat sink should not exceed 50 degrees C.
SHORT-STOP units have internal fuses. These are fast-
acting, semiconductor fuses. They must be replaced with
the same type as originally supplied.
THE USE OF
IMPROPER FUSES IN THE SHORT-STOP WILL
VOID THE WARRANTY!!!
6.
INSTALLATION
6.1
Mounting
The SHORT-STOP may be mounted in any convenient
location, and in any orientation, although vertical is
preferable. Keep it away from sources of vibration, dust,
dirt and extremes of temperature. Once mounted, it
normally needs no maintenance.
6.2
Wiring
ALL WIRING SHOULD CONFORM WITH NATIONAL
AND LOCAL ELECTRICAL CODES.
Terminals 3 and 4 must be connected IN SERIES with the
motor starting contactor coil(s). This can be done by
putting Terminals 3 and 4 IN SERIES with the motor
overload protection contacts, or IN SERIES with the
control system STOP button.
Figures 6.1 - 6.3 show some typical control systems, with
interlock Terminals 3 and 4 wired appropriately.
Figure 6.1
Single Direction with Control Transformer
Figure 6.2
Multiple Station Control
All wiring to the SHORT-STOP is connected to the termi-
nals provided. In general, the wires connected to Termi-
nals 1, 2, 5 and 6 must be able to carry the full motor
starting and running current.
Wires connected to Terminals 3, 4, S, W, B and Y will
carry control currents only and may be of the same gauge
as the control wires for the motor starting contactor.
6.3
Interlock Terminals 3 and 4
Figure 6.3
Forward / Reverse System
During normal running operation the interlock is closed
and conduction takes place between Terminals 3 and 4.
X1
M
!
DISCONNECT AND LOCK OUT
POWER TO SHORT-STOP TERMI-
NALS 1 AND 2 BEFORE SERVICING
THE SHORT-STOP
!
THIS IS THE MOST IMPORTANT
PART OF THE INSTALLATION. IF
THIS WIRING IS NOT DONE
CORRECTLY, THE WARRANTY IS
VOID.
