Basis Weight Actuator
11
Table 2. Manual Station Inputs
Manual
Station Input
Terminal Type of Circuit Assert By Effect While Asserted
INC TB1–15
24V opto-
isolated
grounding to TB1–10
Commands the actuator to run in the direction to open the
valve, provided “max. open” limit switch is not tripped.
DEC TB1–16
24V opto-
isolated
grounding to TB1–10
Commands the actuator to run in the direction to close the
valve, provided “max. closed” limit switch is not tripped.
COMP/MAN TB1–14 24V relay coil grounding to TB1–10
Selects remote control of the IC2000 and the slow preset
speed. Locks out local requests for manual operation.
(When not asserted, the fast preset is selected.)
LOCAL
Normally open, momentary
panel switch
24V relay coil Push and release
Latches the IC2000 in Local Mode and fast preset speed.
Can be released only by asserting the COMP/MAN input.
Table 3. IC500 Inputs
Manual Station
Input
Terminal Type of Circuit Assert By Effect While Asserted
SLOW/INC TB1–18
24V opto-
isolated
grounding to
TB1–10
Commands the actuator to run in the direction to open the
valve, at the preset slow speed, provided “max. open” limit
switch is not tripped.
SLOW/DEC TB1–19
24V opto-
isolated
grounding to
TB1–10
Commands the actuator to run in the direction to close the
valve, at the preset slow speed, provided “max. closed” limit
switch is not tripped.
FAST/INC
(1)
IC500–14a rack slot
K28
24V opto-
isolated
grounding to
TB1–10
Commands the actuator to run in the direction to open the
valve, at the preset fast speed, provided “max. open” limit
switch is not tripped.
FAST/DEC
(1)
IC500–16a rack slot
K28
24V opto-
isolated
grounding to
TB1–10
Commands the actuator to run in the direction to close the
valve, at the preset fast speed, provided “max. closed” limit
switch is not tripped.
1. Non–field accessible.
is desired at the IC2000 cabinet, the Manual Station or
a customer-supplied interface card will be required.
The user is responsible for selecting the COMP (slow)
INC/DEC inputs, or the MAN (fast) INC/DEC inputs,
and insuring that only one set is used at a time. As-
serting more than one of the IC500 inputs simulta-
neously may have unpredictable results. See table 3.
Input Signal Options
You can use relay contacts or open collector transistor
outputs to control the standard IC500 interface mod-
ule.
To assert the inputs by applying a positive voltage sig-
nal from the controlling computer, you can request the
“ROLM OPTION” as a special build, and the additional
circuitry will be mounted in the IC500 card to accept
the positive signals. However, if using the Manual Sta-
tion, the COMP/MAN signal must still be asserted by
pulling it low, since it closes a relay coil circuit.
A special construction is available to accommodate a
4–20 mA position command signal from a user sys-
tem. This requires an input signal isolator, a positioner
to generate INC/DEC signals by comparing the posi-
tion command to the valve position feedback, and an
additional terminal block to accommodate the new
signal interface. A small reduction in resolution may
occur with this system, since some hysteresis must be
built in to the comparator to prevent “hunting” behav-
ior. Contact the factory for help with this option.
Optional Remote Position Indication
If you desire, use terminals 8 (positive) and 9 (nega-
tive) to supply a 4 to 20 mA dc signal for remote indi-
cation of valve position. Other indicators may be con-
nected in series. Total load is 1000 ohm. See figure
18. At these terminals, a 4 to 20 mA dc signal repre-
sents 0 to 90 degree valve position.
Completing the Wiring
After completing the wiring, tighten the wire access
plate screws and connectors where they connect to
the access plate.
Complete the steps in the Settings section before
proceeding.
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