Dwyer FC-1000 - Manual (Page 2)

©Copyright 2007 Dwyer Instruments, Inc. Printed in U.S.A. 8/07 FR# R6-440863-00 Rev. 1
FIG. 2 MODEL FC-1000 INPUT VS OUTPUT CURVE
FIG. 1 PERMANENT SPLIT-CAPACITOR
CONNECTIONS TO THE MODEL FC-1000
FAN SPEED CONTROL.
OPERATIONAL SEQUENCE
VOLTAGE INPUT
Signal input of less than
1.0 VDC
Signal input of 1.0 VDC
Signal input between
1.0 and 10.0 VDC
MOTOR VOLTAGE(VAC, TRUE RMS)
0 volts output to motor.
Hard start (if used). 90-100% of line
voltage applied for 7 (±3) seconds after
which minimum speed will be maintained.
Motor voltage varies directly with signal
input from minimum speed to 100% of line
voltage. See figure 2 for ramp control of
output vs signal input.
INSTALLATION
Maintaining operating temperatures within the listed product ratings is
necessary for proper operation. The FC-1000 control should be mounted
with the cooling fins in a vertical position without obstructions that may
prevent air flow through the fins. Do not mount the FC-1000 where the
control is exposed to excessive heat. For maximum ambient temperature
ratings, refer to the Temperature Range in the Specifications Section.
1. For maximum heat dissipation, locate the FC-1000 where air passes
through the cooling fins.
2. Mount the control where it can be conveniently wired to the power
supply and motor.
WIRING
CAUTION: Disconnect the power supply before the wiring connections
are made to avoid possible electrical shock or damage to the equipment.
Make all wiring connections using copper conductors only. All wiring must
be in accordance with the National Electrical Code and local regulations.
For maximum electrical ratings, refer to the Specifications Section.
CAUTION: The FC-1000 must be connected to suitable earth ground.
Consult wiring diagram (Fig. 1) for proper wiring.
ADJUSTMENTS
Model FC-1000 controls come factory set. There are no field adjustments
available.
CHECKOUT PROCEDURE
Before applying power, make sure installation and wiring connections are
according to job specifications.
After necessary adjustments and electrical connections have been made,
put the system in operation cycle before leaving the installation.
SELECTABLE HARD START/CONTROL OPERATION
Hard start means that the control will apply 90-100% of the line voltage
to the motor for a period of 7 (±3) seconds. After the specified time (7
seconds) for the hard start feature has elapsed, the control output will
revert to a level relative to the input signal (see fig. 2). If the input signal
remains at 1.0 VDC the control output to the motor will remain at
minimum speed. If the input signal is less than 1.0 VDC, the control
output will be zero (0). A built in time delay of 10 seconds will occur
between each hard start. If the Model FC-1000 has an input signal of 1.0
VDC or greater within this 10 second time period, the motor will restart
but it will not hard start.
The hard start feature is selected by a movable two pin jumper located in
board position P1, directly below the FC-1000’s isolation transformer (see
fig. 1). As indicated by the markings on the board, the hard start feature
is “On” when the connector is placed over the two pins which are closest
to the isolation transformer. Likewise, placement of the connector over
the two pins farthest away from the isolation transformer will turn the
hard start feature “Off.” When the hard start feature is “On,” the FC-1000
must receive an input signal of 1.0 VDC or greater in order to initiate hard
start.
FACTORY REPAIRS
In the unlikely event the Model FC-1000 should fail, the unit can be
returned to the factory for warranty repair if the warranty period has not
expired. Field repairs should not be attempted. Repairs for th Mode FC-
1000 in or out of warranty are done on a repair/exchange basis. Please
contact Dwyer Customer Service for a return goods authorization number
before returning the unit. All units returned for repair are to be shipped
freight prepaid, to:
Dwyer Instruments, Inc.
102 Highway 212
Michigan City, IN 46360
Attention: REPAIR DEPARTMENT
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
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