Woodward High Output DVP, 10KW TB Input/Output 8200-536

High Output DVP, 10KW   TB Input/Output 8200-536

High Output DVP, 10KW

TB Input/Output

8200-536

TB Input/Output, SIL Certified

8200-545

TB Input/Output, Servo Interface Module (SIM)

8200-586

The DVP device may be controlled via CAN communication. There are three possible CAN modes:

1. CANopen single with or without analog backup

2. CANopen dual

3. CANopen virtual

1. The CANopen single with or without backup:

This mode uses CAN port 1 for communication. Optionally, it is possible to configure (by CAN

communication) the analog input as a backup signal. By default, the analog input is a backup signal.

(See analog input section for how to interface and setup an analog input.)

2. CANopen Dual:

This mode uses CAN port 1 and CAN port 2. If the two ports are working correctly, information

received from CAN port 1 is used. If communication by CAN port 1 is not possible any more (detected

by communication time out), CAN port 2 is used for communication.

3. CANopen Virtual:

This mode is used when two DVPs are linked together to control more than one actuator or valve. This

is used for Dual Redundant DVP Operation.

The CAN communication baud rate can be selected. The possible options are:

• 125 kbps

• 250 kbps

• 500 kbps

Per CiA DS-102 Standard, the following are the recommended maximum cable lengths. Differences in the

baud rate and the cable length affect the number of units that can be put onto a network.

If CAN port 1 is used, see Figure 3-13 of the CAN port interface. See the Analog Input section above for

the analog interface diagram when CAN is used with an Analog Input backup.

Pins 29 and 30 are the termination jumper. Connecting these two pins with a short wire on the connector

will enable an internal 120 Ω resistor between CAN high and CAN low wire.

Pins 31 and Pin 32 are the CAN High and CAN low wires typically found on a CAN system.

Pins 33 and 34 are two additional CAN high and CAN low pins. These can be used to daisy chain the

CANbus to the next device, without the need for a junction box.

Pin 35 is the CAN ground. The DVP side of the CAN link is galvanically isolated from the DVP, ground,

and system common. Therefore, we need to connect the isolated ground to the ground of the user

control.

Pin 36 is used to terminate the CAN wiring shield.

When using dual can communication mode, there are two identical communication ports. Port 1 and Port 2 are

wired identically. For description, see Port 1.

Table 3-16. Dual CAN Communication Wiring Specifications

Pin Number Function

29 CAN 1 Termination jumper

30 CAN 1 Termination jumper

31 CAN 1 High in

32 CAN 1 Low in

33 CAN 1 High out

34 CAN 1 Low out

35 CAN 1 ISO GND

36 CAN 1 Shield

37 CAN 2 Termination jumper

38 CAN 2 Termination jumper

39 CAN 2 High in

40 CAN 2 Low in

41 CAN 2 High out

42 CAN 2 Low out

43 CAN 2 ISO GND

44 CAN 2 Shield

See Appendix A for more information on CANopen communications.

3.14.1 CAN Node ID Selection

When using CANopen communications, it is necessary to set the CAN Node ID to a unique value to

ensure that the DVP responds to commands intended for the appropriate device. There are two methods

for setting this value— software or hardware/wiring. The method is defaulted to a predetermined

configuration based on the DVP part number but can be changed using the Service Tool (see manual

26912).  With the software option, the node ID setting is a user-defined value set in software. The

hardware/wiring (also referred to as harness coding) option uses discrete inputs to select an index which

sets the node ID value. The index is determined by the power-up state of the discrete inputs. Note that

the discrete input condition is based on open or closed state at power-up, ignoring the active high/low

configuration. Changes to any Node ID-related software settings require a power cycle to take effect.

The discrete input CAN ID selection has three different options. The index can be based on two, three, or

four discrete inputs, allowing three, seven, or 15 valid preprogrammed settings. This selection method is

set using the Service Tool as part of the CAN demand configuration. Tables 3-17. 3-18. and 3-19 identify

the selected index based on the configured selection method.

Definitions:

• Discrete Input 5: connection between terminal 24 and GROUND

• Discrete Input 4: connection between terminal 23 and GROUND

• Discrete Input 3: connection between terminal 22 and GROUND

• Discrete Input 2: connection between terminal 21 and GROUND

• Discrete Input 1: connection between terminal 20 and GROUND

• (GROUND can be any terminal 25. 26 or 27)

3.14.2 Instructions for Use of CAN ID Terminal Blocks

When using the harness coding method (as described in Section 3.14.1), it is necessary to install a

jumper terminal block within each positioner during initial installation. This terminal block configures each

positioner for proper communication with its assigned primary or secondary CAN Open Network. The

installation of this terminal block must be performed before attempting power-up or communications

across the CAN Open Network. Until this process is complete, the positioners will not communicate with

the networks. Install jumpers based on the CAN ID Node Selection and using the information from the

appropriate table (3-17. 3-18. and/or 3-19).

Proper installation of the CAN ID Terminal Blocks is performed by the following steps:

1. Ensure that there is no power being applied to the DVPs.

2. Determine which DVP will be connected to the Primary CAN Network, and which will be connected to

the Secondary CAN Network.

3. Create the appropriate CAN ID Terminal Block associated with each CAN Network.