30 Introduction and Technical Data
Jog Digital input JOG T32
When the Jog Input is held high the drive jogs (rotates slo wly while requested to), provided input Start T33 is
lo w . When the Jog Input is removed the drive will ramp dow n to zero obeying the Jog/Slack Ramp time. Jog
speeds can be selected by input T 19. See the description of the start input belo w for further information
about the jog control. See 6.3.5 JO G CRA WL SLA CK / Jog mode select PIN 42.
Start/stop main contactor control Digital input START T33
When a high input is applied to this terminal the controller will operate provided there are no alarms, the
coast stop input (T34) is already high, the controller run input (T 31) is high and the Jog input is lo w. When
the input is removed the controller will perform a ramped stop to zero speed. The rate of deceleration will be
set according to the programmed stop ramp time. The PLX models will regenerate if necessary to maintain
the ramp rate. So will the PL models that have the electronic stopping facility. The PL models that do not
have this facility will not be able to decelerate faster than the natural coast do wn rate. For all models, when
the motor has reached zero speed, then the main contactor will de-energise.
See 6.3.5 JOG CRA WL SLACK / Jog mode select PIN 42
Note. The user control input contact must be maintained using external interlocking relay logic, or LAT1/2
on terminals 47 and 48. See 4.3.4 Using pushbuttons for simple STOP / START.
See 4.3.5 Using pushbuttons for STOP / ST ART (With ramp to stop, jog and slack take up).
The Start and Jog inputs provide the follo wing operating features
a) Normal running
b) Jogging with 2 selectable jog speeds and programmable contactor drop out delay
c) Cra wling. The cra wl speed is a programmable parameter
d) Slack take up with 2 selectable take up speeds
With start high and jog low, then jog going high acts as a slack take up. With start lo w the jog input is a jog
control. The jog/slack speed 2 select input is on T19 (Jog mode select).
With jog low and mode select high, then start going high acts as the cra wl control. See 6.3.5 JOG CRA WL
SLA CK / Jog mode select PIN 42
The cra wl uses the run mode ramp times to accelerate, and the Stop mode ramp times to stop.
Coast stop main contactor control Digital input CSTOP T34
With a high input, the controller operates normally. When the Coast Stop is at zero volts or open circuit,
the main contactor is open and the drive no longer operates. If this input drops low during running then the
main contactor will de-energise within 100mS and the motor will coast to rest under the influence of
external factors e.g. friction and inertia, or by using an external dynamic braking resistor to dissipate the
rotational energy. Note. The CSTOP must be high for at least 50mS prior to START going high.
Note. When the digital outputs are shorted the 24V output will continue to operate with a current
capability of 50mA. This is so that the CSTOP line does not go lo w and shut do wn the drive. If it is
important that the drive continues running with a shorted digital output then a digital output set
permanently high may be used as an auxiliary 24 V po wer output for other tasks, allo wing the main 24V
output to be devoted entirely to the CSTOP function.
+ 24V Supply (22V to 32V) Output + 24V T35
+ 24V output for external logic. Short circuit protected with fault annunciation. Overvoltage protection to
+ 50V. See 3.4.2 Digital inputs and outputs. War ning. If powering an external encoder then load T35 with a
390R 5W resistor to 0V T36. This will to prevent the 24V output rising above the e ncoder voltage rating.
OV terminal 0V T36
Control terminals on lower power board numbers 41 to 53. Not programmable.
Remote AVF positive input from motor armature RA + T41
RA + RA- used for remote armature volts sensing. (Automatic internal disconnection) If a DC conta ctor is
used with fi eld weakening, it allo ws the field control circuit to continue to sense the back emf of the motor
after the contactor has opened and hence prevent a sudden dangerous strengthening of the field current.
(Note, the A VF is increased by 3.3% when using remote sensing, this causes a -3.3 % speed scale change).
Unconnected terminal. Leave this terminal free of connections. NC T42
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