19
80-0042-00, Rev. 06.9
Continued
FOR INSTALLATIONS WITH NO REMOTE
INDICATOR:
Remove the resistor from between
terminals 13 and 14 and connect the meter across
these terminals. Terminal 14 is positive.
5. Connect 120 V ac to terminals 1 and 2.
6. Turn on the 120 V ac power supply.
7. Set the input signal to 100 percent, that is 20
milliamps (5 volts) maximum.
8. If the position feedback is less than 19.98 mA,
then trim R13 clockwise. If greater than 20.02
mA, trim R13 counter-clockwise. Trim R13 as
required until the output signal is 20.000 mA ±
.002 mA (5.00 V ± .50 mV).
NOTE: As the output signal approaches
20.00 mA, R13 will become more sensitive;
at that point, minor adjustments followed by
cycling the demand signal may be required to
achieve the desired results.
9. Set the input signal to zero percent, that is 4
milliamps (1 volt).
10. If the position feedback signal is greater than
4.02 mA, then trim R14 counter-clockwise. If
less than 3.98 mA, trim R14 clockwise. Trim
R14 as required until the output signal is
4.000 mA ± .002 mA (1.00 V ± .50 mV).
NOTE: As the output signal approaches
4.00 mA, R14 will become more sensitive;
at that point, minor adjustments followed by
cycling the demand signal may be required to
achieve the desired results.
11. Repeat Steps 7–10 as required.
12. Calibration is complete.
13. Replace the control module cover.
SETTING LOSS OF SIGNAL FUNCTION
Option 7 only
The Loss of Signal (LOS) feature gives the
actuator the ability to move the output shaft to
a predetermined position if the input signal falls
below a predetermined value, as long as ac power
is supplied. LOS can function in two ways:
1. Actuator will stay in its last position when the
signal was lost.
2. Actuator will move to a position determined by
the setting of trim potentiometer R16.
The LOS function will start when the input signal
falls below the level set by trim potentiometer R15.
The range of adjustment for this input signal trigger
level is from zero milliamps input to 8 milliamps (2
volts). The choice of having the actuator stay in
place or move to a position is determined by the
position of jumper plug J1/J2 on the control board.
(J1 moves to a predetermined position, J2 stays
in place).
Unless otherwise specified at time of order, Group
42 actuators are shipped with the LOS input signal
trigger level set to 3.4 milliamps (.85 volts). Jumper
plug J1/J2 is set in the J2 or stay in place position.
The move to position trim potentiometer (R16) is set
so that if this function is chosen the actuator will move
to the minimum input signal position.
NOTE: The LOS position is adjusted relative to
the feedback signal. The feed back signal must
be calibrated before the LOS can be set.
Tools required for setting LOS:
mA/V dc voltmeter
3/32 inch screwdriver
Large screwdriver
Figure 7 shows the location of the jumper plug
J1/J2 and the trim potentiometers R15 and R16 on
the control board. Figure 5, page 16, shows the
location of test points TP1 and TP2.
1
F
R
1
A
1
1
1
M
1
CCW
CW
J1
J2
J6
J5
R20
FEEDBACK
POTENTIOMETER
S1
R16
S2
R14
R13
R15
R38
R46
P4
P4
R20
J3 / J4
J5 / J6
J1 / J2
S2 Toggle
(Automatic/Manual)
S1 Toggle
(Forward/Reverse)
1
J3
J4
FEEDBACK
POTENTIOMETER
1
1
CCW
CW
P4
P4
R16
R14
R13
R15
R38
R46
R20
1
J6
J5
1
J3
J4
1
J1
J2
1
F
R
A
1
M
S1
S2
R20
J3 / J4
J5 / J6
J1 / J2
S2 Toggle
(Automatic/Manual)
S1 Toggle
(Forward/Reverse)
22‑5001‑21
22‑4001‑17
Option 7 Control Boards
Figure 7
