Warner Electric MCS-208 - Manual (Page 13)

Warner Electric • 800-825-9050 P-276 • 819-9045 13
 6. Set the “Dancer Position” to its midpoint
range and the “Gain” to “5” on the MCS-
207 faceplate.
 7. Set the internal adjustments on the dancer
logic board per Figure 12, page 17, as
follows:
 a. Proportional gain, “R32” fully clock
wise (CW)
 b. Integrator gain, “R24” at 60%
clockwise
 c. Differentiator gain, “R16” at 75%
clockwise
 d. Differentiator response switch 1 “on”
and switches 2 and “3” off.
 8. Set the output type and range per figure 12,
page 17, as follows:
NoTe: The MCS-207 is factory set to provide a 4-20
ma signal to the transducer. If a standard transducer is
being used, proceed to step 9. For a transducer that
operates with a different input signal, the proper output
must be selected. It will then be necessary to follow the
MCS-207 Brake Off/Brake On calibration procedure
outlined in the static adjustment section, page 13.
 a. Set the voltage/current selector
switch, SW1 on the output/driver
board, for the proper output.
Select IP for a current to pressure
transducer or select EP for a voltage
to pressure transducer.
 b. For a current to pressure transducer,
it is also necessary to select the
proper range. The output current
ranges of 10-50 ma, 4-20 ma and
1-5 ma are available and can be
selected with switch, SW2. This
switch is located on the output/
driver board.
 9. Slide the control module into the housing
and secure with the two captive fasteners
on the faceplate.
Pull the ribbon cable forward so
that the connector end is in front of the housing
assembly. Fasten the ribbon cable connector to the
pin connector on the control module. Pin 1 (Red
Tracer) on the ribbon cable must connect to pin 1 on
the control module as shown. This “Red Tracer” will
ALWAYS be toward the top of the control.
B. Static Adjustment and Check Out
 1. Install a pressure gage into the output of the
transducer.
 2. Apply air pressure to the system.
 3. Apply power to the tension control system
with the machine in a non-running or off
mode. Check that the “power” indicators on
both the MCS-166 and MCS-207 are
illuminated.
 4. Move the dancer arm to the shortest
web-loop position and note that the
transducer output pressure decreases.
Then move the dancer to the longest
web-loop position and note that the
transducer output pressure increases.
NoTe: If the brake pressure is the reverse of this,
the Pivot-Point Sensor is wired backwards or the
transducer wiring is reversed. Refer to the MCS-166/
MCS-207 wiring section for correct connections.
 5. Brake-On/Brake-Off Switch Check
 a. Set the Brake-On switch to its
normal run mode.
 b. Place Brake-Off switch in brake-off
mode and note the transducer output
pressure.
 c. Return the Brake-Off switch to its
normal run mode.
 d. Turn on the Brake-On switch and
note that the transducer output
pressure increases.
 e. Return Brake-On switch to its
normal running position.
NoTe: If the transducer pressure decreases when the
Brake-On is activated, the wiring is reversed. Refer to
the MCS-166/MCS-207 wiring section for the proper
connections.
 6. Brake-Off/Brake-On Calibration
NoTe: The MCS-207 is factory calibrated for a 4-20 ma
output. Proceed to Step 7, Transducer Calibration, if
the MCS-207 need not be adjusted. If adjustment is
required, refer to Table 1 for the correct values called
out in the adjustment procedure. An accurate voltmeter
is required to set up the system.