Bray 70 Series SERVO PRO User Manual

Page 13

BRAY Series 70 Servo Pro

Operation and Maintenance Manual

3.1 c

alibration

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

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

oWer

led

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.