Bray 70 Series Operation And Maintenance Manual

BRAY Series 70 Electric Actuator
Operation and Maintenance Manual
10
inStallatiOn PrOcedure:
Disconnect all power to the unit.
Remove the on/off duty, 9 point terminal strip
and its marker
1. Disconnect all wiring to the terminal strip.
2. All wiring in the actuator is color coded to facilitate
wiring, and does not need to be tagged or marked.
3. Field wiring should be marked if it is not already
color coded.
Mount the servo module
4. Secure the servo card module onto switchplate with
the 2X #6 screws.
Install the potentiometer assembly
5. The potentiometer installs next to the camshaft
where there are two threaded holes provided.
6. The potentiometer assembly must be mounted in the
correct orientation, with the actuator in its fully open
(counter clockwise) position, the indicator shaft should
be in-line with raised green rib on pot gear.
7. Push the assembly towards the cam to mesh the pot
gears. Then tighten the mounting screws.
Note: On Housing Size 180, the raised green rib on
pot gear should be aligned with arrow on lower gear
box’s position indicator plate.
8. Rotate the actuator handwheel so that the red cam lobe
is facing the body of the potentiometer. Make sure that
the cam is not touching the potentiometer assembly.
Readjust the assembly position if necessary.
Wire the potentiometer to the servo
9. Connect the potentiometer wires into the terminal strip
on the servo module.
10. Wire according to the wiring diagram provided.
Wire the servo to the actuator
11. Wire according to the wiring diagram provided.
12. See the servo calibration instructions.
SerVO calibratiOn
The calibration procedure denes the limits of operation of
the Series 70 Actuator between the fully open valve position
and the fully closed valve position. The cams on the Series
70 Actuator dene the fully open and closed positions of the
valve and may be set at any degree of opening. The only
requirement is that the open cam limit setting must set at a
higher degree of opening than the closed cam limit setting.
In other words, the “Open” position must be more open
than the “Closed” position.
Calibration is performed as follows:
1. Adjust the Open and Closed limit switch cams on the
Series 70 Actuator to the desired position.
2. Engage the handwheel and move the Series 70 Actua-
tor to its mid position.
NOTE:
An analog signal source is not required for calibration.
Press and hold the “Calibrate” Set pushbutton for a
minimum of 2 seconds. When the servo status LED
begins to ag rapidly, release the button. The servo will
now seek both travel limits and record these values to its
nonvolatile memory. Following a successful calibration,
the status LED will begin to ash a slow single green
ash. If the calibration is unsuccessful, the status LED
will alternately ash red and green. If this occurs, make
sure the cams and the potentiometer are set correctly.
This completes the “Self Calibration” procedure.
After completing the calibration procedure, it is good practice
to apply the fully closed and fully open Command Signals, and
verify that the S70 Actuator moves to the proper positions.
* Refer to Servo Pro Version 3.0 Operation & Maintenance Manual
for more details
MOTOR
OPEN
1
ON
MOTOR
CLOSE
FUSE
NEUTRAL
NEUTRAL
LINE
Power
OUTPUT (+)
OUTPUT (-)
+5 VDC
INPUT (+)
INPUT (-)
OPEN
LIMIT
CLOSE
LIMIT
COMMON
COMMON
HANDWHEEL
CALIBRATE
STATUS
+5 VDC
COMMON
FB POT
HIGH
VOLTAGE
SERVO
2
10987
6543
PRO
HEATER
DEAD BAND
CLOSE SPEED
OPEN
SPEED
CLOSE
OPEN
COMMON
TORQUE LIMIT
CLOSE
OPEN
COMMON
CONTROL BOX
S10 S9 S8 S7 S6
S5 S4 S3 S2 S1
Green Rib

Bray 70 Series Specifications

General

Brand	Bray
Model	70 Series
Category	Controller
Language	English