Basis Weight Actuator
3
Only personnel qualified through training or experience
should install, operate, or maintain this equipment.
Do not attempt to install, operate, or maintain this
product without this instruction manual and the valve
instruction manual. If you have any questions concern-
ing these instructions, contact your Fisher Controls
sales office or sales representative before proceeding.
Specifications
Valve
Refer to the appropriate valve instruction manual for
specifications.
Actuator and IC2000
See the Specifications table.
Driver Card
Description of Terminal Functions
Motor Phases 1A, 1B, 2A, 2B (pins 2, 4, 6, and 8 on
both rows). Connect one phase of the motor to 1A and
1B, and the other phase to 2A and 2B. To reverse the
direction of rotation relative to the direction input, inter-
change the connections to 1A and 1B.
+24 DC Out (pin 10, both rows). Use this output to
supply an external control module such as an indexer
card. The maximum current which may be drawn is
250 mA.
Logic Supply Inputs 1 and 2 (pins 12a and 14a).
When the drive is AC–powered, these two inputs are
connected to a center–tapped secondary on the power
transformer rated at 18–0–18 volts RMS. The center
tap is connected to power commom (pins 16 & 18,
both rows).
Motor Supply Inputs (pins 12c and 14c). For opera-
tion at a motor supply of 24v, these inputs may be driv-
en from the same transformer secondary as the logic
supply. An extended secondary rated at
26–18–0–18–26 volts RMS is required for operation at
36v, with the motor supply inputs fed from the 26–volt
taps.
Fast Input (pin 20a). Connect to 0v to run the internal
oscillator at the fast rate.
Slow Input (pin 22a). Connect to 0v to run the internal
oscillator at the slow rate.
Rate Adjust Inputs (pins 24a, 24c, and 26a). The
speed of the internal oscillator is determined by exter-
nal potentiometers connected across the appropriate
inputs. The normal values are 100K for the fast control
and 500K for the slow control, and these will give the
specified speed ranges. Higher values may be fitted to
reduce the minimum speed in each range.
Direction Input (pin 26c). Connect to 0v to reverse
the direction of motor rotation. This input should not be
changed when the ‘‘clock’’ input is low or while the mo-
tor is running above its start/stop speed.
Internal Clock Output (pin 28a). This is the output of
the internal oscillator which will normally be connected
to the clock input of the drive (pin 28c). The output
consists of low–going pulses approximately 25mS
wide.
Clock Input (pin 28c). The motor will step following a
low–going pulse on this input, the step occurring on
the rising edge of the pulse. The input should remain
low for at least 10mS, It may be driven from an external
oscillator card or the internal oscillator in the drive. The
latter method is used in the IC2000
Energize Input (pin 30c). The motor will be energized
with this input connected to 0v. Link 4 may be fitted as
an alternative to making an external connection to 0v.
Note that the drive should not be de–energized when
the motor is running at speed.
External Reference Input (pin 32a). The motor cur-
rent may be programmed by means of an external re-
sistor connected between this input and signal 0v
(32c). A 1K resistor will give approximately half the
rated current. This input is used to control the standby
or “braking” current in the IC2000.
Signal 0V (pin 32c). Use this pin as a return connec-
tion for the current programming resistor.
Two internal fuses are fitted to the drive power supply
circuits. These are 20 mm quick–blow types and are
rated in the specifications table.
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