Bray 70 Series SERVO PRO DeviceNET - Manual (Page 7)

S70 DeviceNet Servo Installation & Maintenance Manual
2000 BRAY CONTROLS Page 6 of 24
2.2.5 Calibration Button
When the Calibration Button is pressed for 2 seconds, the S70 DeviceNet Servo will start an
automatic calibration.
2.3 Normal Operation
Since the S70 and the Series 70 Actuator is an integral unit, the S70 is powered from the
DeviceNet Bus power. The Actuator motor is powered from the AC line voltage and is
controlled by the S70 DeviceNet Servo. The recommended sequence to start the S70 is as
follows:
1. The DeviceNet network must be powered and connected to the Series 70 Open Style
Connector with proper network termination. Refer to Section 3.2 for more information
regarding DeviceNet network setup.
2. Apply AC power to the Series 70 Actuator.
3. The power LED will light and the S70 Netowrk Status LED will briefly flash Red, then
Green. If the module is properly commissioned the Network LED should begin to flash
green at ½ second intervals. This indicates that the S70 has recognized the DeviceNet
bus, does not have a conflicting address, and is configured at the correct baud rate. If
the DeviceNet LED D17 is red or flashing red, refer to section 4.3 for trouble-shooting. If
any other LEDS are flashing, this indicates an error condition. Refer to Section 4 to
interpret the LED error codes for corrective action.
Once the DeviceNet LED D17 is flashing green, the S70 has become part of the DeviceNet
network and is ready to be commissioned (Section 3.1.5).
2.4 Calibration
The S70 calibration defines the limits of operation of the Series 70 Actuator between the open
valve position and the closed valve position. The S70 calibration is flexible and does not require
that the valve be at the full opened or closed position to define the calibration end points. The
cams on the Series 70, which define the opened and closed positions of the valve are relative to
the user’s requirements and can be set at any location. The only exception is that the open
Cam limit setting must correspond to a valve position that is more open than the Cam, which
defines the closed limit valve position.
Perform the following before the calibration:
1. Before entering the calibration mode, adjust the open and close limit Cams on the Series
70 to the desired position, then manually adjust the valve with the Series 70 Handwheel
engaged to a position midway between the Cams so then neither Cam is engaged.