Veeder-Root TLS4/8601 Series, Руководство по устранению неисправностей

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Troubleshooting Relay Will Not Change State
24
2. Connector is not pushed all the way
in or incorrect input wiring from
external device.
WARNING! When troubleshooting I/O
Relays, high voltages could be pres -
ent on the input wiring. Lock out, tag
and shut down the equipment con -
nected to these two relays before
attempting to troubleshoot the wiring
or fuses to these relays.
1. Remove the console’s cover following steps 1 & 3
in Display/CPU Assembly removal instructions on
page 26.
Verify the relay plug is pushed all the way into the
connector (Item 2 in Figure 2). Verify each of the
wires is correctly seated in the plug’s terminal
clamps. If the clamps are not opened all the way
when inserting the wires into the plug, the wires
can be inserted behind the clamps preventing
proper contact.
No Correct wiring connections.
Yes Go to next cause.
2. Verify external wiring into the relay input connec -
tor.
No Correct wiring connection.
Yes Go to next cause.
3. Fuse missing or blown. Remove the Display/CPU assembly following the
Display/CPU Assembly removal instructions on page
26.
Locate the Relay 1 fuse (F4) and the Relay 2 fuse (F2)
(see Item 6 in Figure 4).
Check fuse(s).
No Install or replace fuse(s) with the
correct type as shown on label
next to relay input plug.
Yes Replace USIOM board.
Table 19. Troubleshooting Procedure for Relay That Will Not Change State
Probable Cause Action OK? Action
OFF