GE Industrial Solutions Entellisys Device Replacement Guide - Manual (Page 12)

Replacing a CPU chassis 12
1
1.4 Installing the rear-mount front-most chassis
1. Make sure that the power switch at the rear of the chassis is in the OFF position.
2. Locate the 120 Vac power socket and the 2-pin 12 Vdc socket at the rear of the chassis.
3. Insert the replacement chassis into the mounting bracket.
NOTE: Do not remove any mounting hardware from the rear chassis.
WARNING! Voltages hazardous to personnel and equipment are present—be careful not to
contact the energized terminal blocks on the compartment walls.
4. Install the 120 Vac power cable by pushing it firmly into the socket.
5. Connect the 2-pin plug by inserting it into the socket until it clicks into place.
6. Install four mounting bolts and star washers into the chassis tab holes. Make sure they are
fully tightened.
7. Re-connect the two Ethernet cables into the CPU card according to the markings on the
cable ends.
8. Reconnect the synch clock cable to PORT 0 (CPU A) or to COM 2 (CPU B).
9. Turn on power to the CPU and chassis using the power switch. The indicators at the front of
the CPU should light.
10. Close the instrument compartment.
When the CPU has completed booting, verify its operation from the HMI's System Health screen.
At this time it may be desired to set the replaced CPU as the system default. (From the Main
Menu, click User Settings, and then click HMI Preferences.)
1.5 Removing the rear-mount rear-most chassis
1. Prepare for the shut down of the CPU by setting the remaining CPU in the system as the
default. (From the Main Menu, click User Settings, and then click HMI Preferences.)
WARNING! Voltages hazardous to personnel are present.
2. Open the instrument compartment. Turn off power using the switch at the rear of the rear-
most chassis. When the chassis is powered off, the CPU indicators do not light.
3. Disconnect the two Ethernet cables and one synch clock cable from the CPU, making note to
which port each is connected.
4. At the rear of the chassis, remove the 2-pin connector plug by depressing the tab and sliding
the plug out and away from the chassis.
5. Remove the four mounting bolts and star washers at the tops of both chassis.