11
Series 70 Servo Pro
Operation and Maintenance Manual
3.1 Calibration Procedure
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 inward.
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 Diagnostic Indicators
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 Power 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 Motor Power LEDs
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 Status 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.
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