Bray 71 Seires - Manual Operation; Command Signal Calibration; Autocalibration

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Series 71 – Modulating Controller - Electric Actuator
Installation, Operation and Maintenance Manual
 Manual Operation
Manual operation of the actuator is performed via declutchable handwheel
The S Servo will continue to operate as if in remote mode though it
will not be able to actuate to a new setpoint until the manual mode is
disengaged See the S IOM for additional details

Command Signal Calibration
A command signal calibration routine is provided to increase accuracy by
accounting for small static defaults associated with the input circuitry It is
suggested to perform this once at commissioning prior to performing the
autocalibration routine
First select the desired input signal mode using the input pushbutton until
the appropriate LED is highlighted If -mA mode is selected disconnect
wiring from the command signal terminals If a voltage mode is selected
disconnect wiring from the command signal terminals and attached a wire
jumper between the command () and command (-) terminals
Press and release the calibration (Cal) button once the calibration LED
begins to flash rapidly Within  second press and release the Input mode
button Most LEDs will turn off The Heartbeat LED will continue to operate
and the Fault LED may continue to flash
Once the LEDs turn back on the calibration is complete and the calibration
will be stored in the non-volatile memory Reconnect the command signal
wiring to the command signal terminals
WARNING
The input signal calibration routine must be run if the input signal type is changed
from a voltage mode to a current mode or vice versa
 Autocalibration
Autocalibration mode is entered by pressing and holding the Autocalibration
(Cal) button for at least  second Entering Autocalibration mode starts the
autocalibration sequence a series of commands performed by S Servo on
the actuator to determine the operating points During the autocalibration
sequence the S Servo should be monitored to ensure it operates
correctly The calibration LED will flash slowly to show that autocalibration
has been entered and will continue to flash at the end of travel until
autocalibration completes Upon completion of the autocalibration
sequence calibration LED will turn off
If the fault indication lights illuminate during autocalibration then the
autocalibration sequence could not be successfully completed Refer to the
troubleshooting section for more information
No other operating modes can be entered during autocalibration and
entering autocalibration mode will override any previous mode of operation