CHAPTER 4: CONNECTING TO DEVICES AND NETWORKS
D400 SYSTEM REDUNDANCY
D400 SUBSTATION GATEWAY USER’S MANUAL
GENERAL
69
To manually operate
the RS232 switch
panel:
1.
Pull the active/standby switch straight out to release it from the locked position
2.
Switch it up to make unit A active or down to make unit B active
The CCU A/CCU B LED indicator indicates which unit has been activated.
Redundancy wiring diagrams
The following diagrams illustrate how to wire the D400 units and RS232 switch panels to
enable system redundancy:
•
Redundancy Wiring - Single RS232 Switch Panel
See “Redundancy Wiring - Single RS232 Switch Panel” on page 70.
•
Redundancy Wiring - Dual RS232 Switch Panel. The wiring drawing is provided in two
parts: left and right.
–
For the left side of the drawing, see “Redundancy Wiring - Dual RS232 Switch
Panel (1 of 2)” on page 71
–
For the right side of the drawing, see “Redundancy Wiring - Dual RS232 Switch
Panel (2 of 2)” on page 72
This configuration is used to provide up to 15 serial connections to the redundant
D400 units.
•
Redundancy Wiring - Redundant RS232 Switch Panel. The wiring drawing is provided
in two parts: left and right.
–
For the left side of the drawing, see “Redundancy Wiring - Redundant RS232
Switch Panel (1 of 2)” on page 73
–
For the left side of the drawing, see “Redundancy Wiring - Redundant RS232
Switch Panel (2 of 2)” on page 74
This configuration is used to provide RS232 panel redundancy for up to 7 serial
connections.
NOTE
When connecting to more than 7 field devices, you must double the number of RS232
switch panels used. When using this configuration, follow the instructions in “To set up a
redundant system with two RS232 switch panels:” on page 68.
NOTE
The D400 watchdog (control) port, heartbeat (ping) port, and serial port assignments are
software configurable. Refer to the
D400 System Redundancy
section in the
D400
Substation Gateway Software Configuration Guide
(SWM0066).
