Network Terminal Installation, Operation, and Maintenance Instructions
P/N 8040375G001
6-1
C
HELIX TECHNOLOGY CORPORATION
-
TI
CRYOGENICS
Section 6 - Troubleshooting
If You Have Problems Starting A Group FastRegen
If you attempt to start a Group FastRegen and GROUP REGEN ERR is
displayed on the Network Terminal keypad/display, it means that the
pumps were not started into regeneration for one of the following reasons:
1. One or more of the pumps in the group is too warm (above
50K) to initiate FastRegen.
2. One or more of the pumps in the group is not FastRegen compatible
or the group contains pumps with incompatible FastRegen Control
Modules.
3. One or more of the pumps in the group is not detected as being
present by the Network Terminal.
If You Cannot Communicate With A Pump
Perform the following steps if the Network Terminal does not seem to
communicate with a pump:
1. Check the pump address of the pump that you cannot
communicate with and make sure it has a unique address
compared with the other pumps within the system.
2. Make sure that a terminator has been installed in the network port
on the last On-Board module within each group (00-09 and 10 -19).
3. Make sure that power is available to the pumps. Make sure the
LED on the On-Board Module panel is illuminated.
4. Make sure that all network cables are connected properly.
