9
TRUNKGUARD
®
Fieldbus
Power Supply
TPS400
Testing and Troubleshooting
Refer to Table 1 for information on LED indications of
fault conditions.
Note:
The DIN Carrier has a link fi tted at each Power
Conditioner position. The link must be removed prior
to installation of a Power Conditioner and must be
replaced should a Power Conditioner be removed to
avoid alarm indication.
LED Operation
During normal operation, LED sequence should be as
follows:
TPS202/TPS205 Power Conditioners: All LEDs
should be GREEN.
FDM252 Diagnostics Modules: All LEDs should
be
GREEN.
If any RED LED is ON, or any GREEN LED is
OFF, refer to Table 1 for troubleshooting tips.
LED
DC power_A
DC power_B
NOISE 1
NOISE 2
NOISE 3
NOISE 4
LED Indication
GREEN RED OFF
Normal Operation Input Voltage A < 18V Module failure
GREEN RED OFF
Normal Operation Input Voltage B < 18V Module failure
GREEN RED OFF
Normal Operation Noise > 75mVp/p Module failure
GREEN RED OFF
Normal Operation Noise > 75mVp/p Module failure
GREEN RED OFF
Normal Operation Noise > 75mVp/p Module failure
GREEN RED OFF
Normal Operation Noise > 75mVp/p Module failure
FDM252 Fieldbus Diagnostic Module
LED
POWER
OUT LOW
SHORT CIRCUIT
OPEN CIRCUIT
*Open Circuit detection is inactive. Red LED indicates a Carrier Fault
LED Indication
GREEN Orange OFF
Normal Operation Output Voltage < 18V Module failure
GREEN RED OFF
Normal Operation Carrier Fault*
Module failure
GREEN RED OFF
Normal Operation Cable short-circuit Module failure
TPS202/TPS205 Power Conditioner
Table 1.
Troubleshooting
Figure 6.
Module LED Indicators
TPS202 / TPS205
FDM252
