Bray 70 Series SERVO PRO - Manual (Page 13)

11
BRAY Series 70 Servo Pro
Operation and Maintenance Manual
3.1 c
alibration
P
rocedure
The calibration procedure should be run when the Servo
Pro is first commissioned, and anytime that a subsequent
change is made to either the Servo Pro Configuration or
the actuator in which the Servo Pro is installed.
1. Engage the actuator handwheel by pulling it
outward, and manually move the actuator to the
mid-travel position.
2. Disengage the actuator handwheel by pushing it in
ward.
3. Press the Calibration button, hold it for a minimum
of 2 seconds, and release the button.
4. The Servo Pro should enter the Calibration routine
and move the actuator toward the fully closed
position. After reaching the fully closed position, it
will reverse travel and move toward the fully open
position. After reaching the fully open position, the
Servo Pro will write the calibration value to memory,
return to normal operation, and move the actuator to
the position that matches the command input signal.
5. After a successful calibration, the Status LED will
return to the normal heartbeat pattern.
6. After an unsuccessful calibration attempt, the Status
LED will flash an error code of “red-green-red-green.”
For more information on the error codes, refer to the
Status LED Flash Code Table. Correct the error and
run the calibration procedure again.
4.0 d
iagnostic
i
ndicators
The Servo Pro has several diagnostic indicators, such
as the Power LED, Motor Open LED, Motor Close LED,
and Status LED. The Servo Pro is constantly performing
self-diagnostics. These indicators assist the user in
confirming proper operation of the Servo Pro, and
troubleshooting various operational problems.
4.1 P
oWer
led
The Power LED will light solid green when the proper
electrical power is supplied to the Servo Pro power terminals.
If the Power LED is not solid green, then the power supply
is not working and the Servo Pro will not function.
The fuse must be installed for the Power LED to light.
4.2 m
otor
P
oWer
led
s
There are two Motor Power LEDs.
The Motor Open LED will light green when the Servo
Pro is powering the motor in the open direction. This
occurs when the current actuator position is below the
command signal (desired actuator position.) The actuator
should be moving in the open direction when the Motor
Open LED is lit.
The Motor Close LED will light red when the Servo Pro
is powering the motor in the close direction. This occurs
when the current actuator position is above the command
signal (desired actuator position.) The actuator should
be moving in the closed direction when the Motor Close
LED is lit.
4.3 s
tatus
led
The Status LED is a bi-color LED (red/green) that indicates
various operational conditions of the Servo Pro. The Status
LED flashes the green “heartbeat” pattern – a repeating
cycle of one second ON followed by one second OFF –
to indicate normal operation.
Any flashing pattern other than the green heartbeat
indicates either an advisory condition or an error condition.
Advisory conditions are combinations of green flashes.
These indicate the Servo Pro is operating, but it may not
be in an optimal condition. An example would be Reverse
Acting mode selected. The user may desire this condition,
but it may also be an oversight that requires correction.
Error conditions are combinations of red flashes. These
indicate the Servo Pro is not operating properly. An
example would be handwheel engaged. The Servo Pro
cannot move the actuator motor in either direction when
the handwheel is engaged.
notice
Any Status LED Flash Code with green flashes is simply
an advisory that should be noted and may, or may not,
require adjustment. Actuators can operate properly
while the Status LED is flashing green.
Any Status LED Flash Code that contains red flashes
is an error that must be corrected before the actuator
can operate properly.