16
PDS SERIES DRIVE USER GUIDE
FAULT+
9
21
FAULT-
1K2
+12V
0V
FAULT+
9
21 FAULT-
4K7
+24V max
0V
OR
Remote
Indicator
Figure 7. Fault Output Examples
Slow Run
(Pin 12)
Connect this input to GND directly to run the internal clock source at
the slow rate.
Fast Run
(Pin 13)
Connect this input to GND directly to run the internal clock source at
the fast rate.
S Pin 16
& Shutdown- Pin 17
These differential inputs (pins 16 and 17) are used to energise and
de-energise (shutdown) the motor. When the s input is
taken high and shutdown- is low, the drive is shut down and the
motor shaft may be rotated slowly by hand.
NOTE: Back-driving the motor at excessive speed may damage the
drive.
Cycling the shutdown input resets a fault condition, provided the
cause of the fault has been removed.
Adjust Common
(Pin 19)
Common return connection for external speed controls (nominal
+12V).
Internal Clock Out
(Pin 20)
This open collector output (NPN transistor) goes low every time the
drive sees a step pulse from the internal clock source. It must be
pulled up using an external resistor. Pulse width is 1
µ
s.
GND
(Pin25)
Control signal return.
Internal Speed
Control
The drive contains a two speed oscillator circuit to allow “jogging” of
the motor. This clock source produces a linear ramp up to the FAST
speed setting. The SLOW speed setting is not ramped. Three 20
turn potentiometers are provided on the front panel to adjust the
settings of the oscillator. The SLOW and FAST presets adjust the
frequency of the corresponding range and hence the motor velocity.
Note that motor resolution does not effect the velocity setting.
Clockwise rotation of a potentiometer produces an increase in motor
velocity. The FAST and SLOW potentiometers can optionally be
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