Bray 70 SERVO PRO DeviceNET User Manual
S70 DeviceNet Servo
Installation & Maintenance Manual
Version 11
BRAY CONTROLS
13333 Westland East Blvd.
Houston, TX 77041 USA
(281) 894-5454
FAX (281) 890-1100
S70 DeviceNet Servo Installation & Maintenance Manual
1. INTRODUCTION ............................................................................................................................... 2
2. HARDWARE DESCRIPTION .......................................................................................................... 3
2.1 HARDWARE FEATURES................................................................................................................ 4
2.2 CONNECTOR WIRING .................................................................................................................. 4
2.2.1 S70 Actuator Motor Connector ............................................................................................. 4
2.2.3 DeviceNet Connector J7 ....................................................................................................... 5
2.2.4 Feedback Pot J4 .................................................................................................................... 5
2.2.5 Calibration Button ................................................................................................................ 6
2.3 NORMAL OPERATION .................................................................................................................. 6
2.4 CALIBRATION ............................................................................................................................... 6
2.5 AUTO CALIBRATION .................................................................................................................... 7
5. THE ACTUATOR IS UNABLE TO REACH EITHER THE OPENED OR CLOSED LIMIT
SWITCH WITHIN 45 SECONDS............................................................................................................. 7
3. DEVICENET INTERFACE .............................................................................................................. 8
3.1 DEVICENET NETWORK ............................................................................................................... 8
3.1.1 Network connections, terminations, power, and limits ......................................................... 8
3.1.2 Network Grounding and Isolation ...................................................................................... 10
3.1.3 Network Power .................................................................................................................... 11
3.1.4 Network Status LED ............................................................................................................ 13
3.1.5 Commissioning .................................................................................................................... 13
3.1.6 Supported Attributes ........................................................................................................... 14
3.2 CONFIGURATION........................................................................................................................ 15
3.3 COMMUNICATION ...................................................................................................................... 16
3.3.1 Polled Message Connection ................................................................................................ 16
3.3.2 Explicit Message Connection .............................................................................................. 16
3.4 EDS (ELECTRONIC DATA SHEET) ............................................................................................ 16
4. TROUBLE SHOOTING .................................................................................................................. 21
4.1 CALIBRATION ............................................................................................................................. 21
4.2 ACTUATOR OPERATION ............................................................................................................ 22
4.3 DEVICENET NETWORK ERRORS .............................................................................................. 23
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S70 DeviceNet Servo Installation & Maintenance Manual
1. Introduction
The Bray S70 DeviceNet Servo is an ODVA (Open DeviceNet Vendor Association) certified
DeviceNet product that provides complete control and monitoring of the Bray S70 Electric Valve
Actuator. The basic function of the S70 DeviceNet Servo is to position the S70 Actuator in
response to commands from the process controller. The process controller contains a desired
process setpoint entered by the user, and continually monitors the process variable (i.e. flow
rate, tank level, etc.) through some form of sensor. Varying commands to the S70 DeviceNet
servo will change the S70 Actuator position, which in turn moves the underlying control valve to
create a change in the process variable. The process controller calculates and transmits the
appropriate commands to the S70 DeviceNet Servo in order to establish and maintain the
desired process setpoint.
The S70 DeviceNet Servo takes advantage of the industry standard DeviceNet network with
features and benefits that greatly enhance the operation of the S70 Actuator, such as:
Reduced hardwiring to simplify product installation.
Built-in product diagnostics for enhanced reliability.
Online user configurable settings for complete remote operation.
An EDS (Electronic Data Sheet) to simplify configuration.
Real-time reporting of critical information such as valve position, motor temperature, and
motor current to ensure reliable operation.
Automated Microprocessor calibration eliminates potentiometer settings and simplifies
commissioning.
Fully programmable DeviceNet Baud rate and MacID eliminating switch settings.
Certified by the ODVA as fully DeviceNet compliant, ensuring reliable operation with any
other DeviceNet product.
This document is organized into three main sections:
S70 Hardware, which includes installation and operation
DeviceNet Interface including communication, configuration, and a brief overview of the
DeviceNet network
Troubleshooting Guide
Refer to the S70 Hardware Section (0) for information on wiring and connections to the S70,
jumper settings, LED functions, and troubleshooting.
Refer to the DeviceNet Interface Section (3) to learn more about the DeviceNet network,
communicating with the S70 DeviceNet Servo, and how to use the EDS (Electronic Data Sheet).
Refer to the Troubleshooting Section (4) to solve calibration, actuator movement, or DeviceNet
issues.
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S70 DeviceNet Servo Installation & Maintenance Manual
Motor Close LED
DeviceNet Connector
Motor Power
Power LED
Limit Switch
Network LED
Handwheel
Calibration
Button
Feedback Potentiometer
AC Power
Torque Limit
Switch
Motor Open LED
2. Hardware Description
The S70 DeviceNet Servo consists of an electronics module (Figure 1), which includes the
DeviceNet interface, terminal connections to the S70 Actuator, calibration button, DeviceNet
Network Status Indicator, and connections and indicators to features described in Section
Error! Reference source not found..
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Figure 1: S70 DeviceNet Servo
S70 DeviceNet Servo Installation & Maintenance Manual
Description
Electrical Notes
Feature Availability
Auto / Manual Handwheel
Actuator Operation
Auto Operation = Low
Manual Handwheel Engaged = Open
Standard
Closed Torque Limit
Normal Operation = Low
Limit Reached = Open
Standard
Open Travel Limit
Normal Operation = Low
Limit Reached = Open
Standard
Closed Travel Limit
Normal Operation = Low
Limit Reached = Open
Standard
Open Torque Limit
Normal Operation = Low
Limit Reached = Open
Standard
2.1 Hardware Features
The following are standard hardware features of the S70 DeviceNet Servo:
DeviceNet 5-position open style connector
S70 Actuator Motor connector
S70 Actuator Limit Switch connector
Feedback Potentiometer connector
Red and green calibration LED indicators
Green Power LED
Green Motor Running Open drive LED
Red Motor Running Closed drive LED
Bi-color (red / green) DeviceNet Network Status LED
2.2 Connector Wiring
2.2.1 S70 Actuator Motor Connector
The S70 Actuator Motor is connected to the S70 DeviceNet Servo motor power terminal
connector with 3 wires: Common (Black Wire), Motor Open (Blue Wire), and Motor Close (Red
Wire).
2.2.2 S70 Limit Switch Connector
If any of the Series 70 features such as the Handwheel switch (Auto / Manual Operation), torque
limit switches, or limit switches (open limit and close limit) are not used, they must be connected
to a terminal labeled “common” for the S70 to operate.
Table 1: Limit Switch Connector J6 pin description
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S70 DeviceNet Servo Installation & Maintenance Manual
Description
Wire Color
V-, CAN power supply return
Black
CAN Low
Blue
Shield
Bare/Gray
CAN High
White
V+, CAN power supply source
Red
Description
Requirements
Reference voltage (Gray)
Potentiometer full open end point
Voltage relative to valve position (Orange)
Potentiometer wiper
Ground (White)
Potentiometer full close end
point
V+ CANH SHIELD CANL V-
2.2.3 DeviceNet Connector J7
The Series 70 Actuator is shipped with a DeviceNet Open Style connector as shown below:
This connector has the following pin-out:
Figure 2: DeviceNet Open Style Connector
Table 2: DeviceNet Wire Colors
2.2.4 Feedback Pot J4
The Feedback Potentiometer on the Series 70 Actuator reports to the S70 the actual position of
the valve. The S70 will not operate without this connection in-place.
Figure 3: Feedback Pot Connector J4
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S70 DeviceNet Servo Installation & Maintenance Manual
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.
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S70 DeviceNet Servo Installation & Maintenance Manual
2.5 Auto Calibration
To commence the Auto Calibration, do the following:
1. Press the calibration button for 2 seconds and then release.
2. The S70 will automatically seek the closed position and is indicated by the RED LED
D27. If the Actuator is already at the fully closed position, the S70 will move the Actuator
open until the Close switch is disengaged, and then move closed until the closed switch
engages.
3. Next, the S70 will automatically seek the open position. The Actuator will move toward
the opened direction until the opened switch engages.
4. The calibration readings are automatically stored into the S70 non-volatile memory.
5. The Auto Calibration mode can be aborted at anytime by engaging the Handwheel.
The Auto Calibration will fail under the following conditions:
1. The Handwheel is engaged (pulled outward).
2. The Opened or Closed Limit Switch CAMS are incorrectly set.
3. The Torque limit switch is activated during the calibration.
4. The position feedback potentiometer is not plugged into the S70 or is incorrectly
oriented.
5. The Actuator is unable to reach either the Opened or Closed limit switch within 45
seconds.
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