Diagnostic Leds - Vaisala K-PATENTS PR-23 Series Instruction Manual

8 Troubleshooting

8.1.2 Diagnostic LEDs

Figure 8.1 and Figure 8.2 assist to localize the diagnostic LEDs.
LED
Front panel
green LED
Transmitter processor card PR-10500
2 yellow LEDs
Transmitter motherboard PR-10600
yellow LED (D17)
green LED (D16)
green LED (D26)
2 green LEDs (D23, D25)
H1 interface card PR-10701
green LED (LD1)
green LED (LD1)
red LED (LD2)
red LED (LD2)
green LED (LD3)
green LED (LD3)
red LED (LD4)
red LED (LD4)
Important: A lit red LED on PR-10701 always indicates a problem. Red LEDs are
always turned off in normal operation, whether any sensors are connected or not.
Status Indication
lit DTR power is on;
Processor card PR-10500 is active.
blinking Processor card ok.
blinking Motherboard processor working.
lit Processor card converts 24V/3V.
lit Isolating DC/DC conversion ok.
lit Corresponding relay (RLY1/RLY2)
has power.
lit Sensor A current correct, 20–60 mA.
blinking Sensor A is being reset.
blinking Sensor A current is too high and
the card is trying to reconnect
with correct current.
lit Sensor A current is too high and
power supply to Sensor A
has been switched off.
lit Sensor B current is correct,
20–60 mA
blinking Sensor B is being reset.
blinking Sensor B current is too high and
the card is trying to reconnect
with correct current.
lit Sensor B current is too high and
power supply to Sensor B
has been switched off.
Table 8.1 Diagnostic LEDs
67
See
8.1.1
8.1.6
8.1.6
8.1.6
8.1.6