Vaisala PR-23 Series User Manual

Table 8 Diagnostic LEDs
LED Status Indication See section
Front panel
Green LED Lit DTR power is on; processor card
PR‑10500 is ac
tive.
Blank display
(page 88)
Transmitter processor card PR‑10500
2 yellow LEDs Blinking Processor card OK.
Transmitter motherboard PR‑10600
Yellow LED (D17) Blinking Motherboard processor working.
Green LED (D16) Lit Processor card converts 24 V / 3 V.
Green LED (D26) Lit Isolating DC / DC conversion OK.
2 green LEDs (D23, D25) Lit Corresponding relay (RLY1 / RLY2)
has po
wer.
H1 interface card PR‑10701
Green LED (LD1) Lit Sensor A current correct,
20 … 60 mA.
Green LED (LD1) blinking Sensor A is being reset.
Red LED (LD2) Blinking Sensor A current is too high and
the car
d is trying to reconnect with
correct current.
Red LED (LD2) Lit Sensor A current is too high and
po
wer supply to Sensor A has been
switched o.
Green LED (LD3) Lit Sensor B current is correct,
20 … 60 mA.
Green LED (LD3) blinking Sensor B is being reset.
Red LED (LD4) Blinking Sensor B current is too high and
the car
d is trying to reconnect with
correct current.
Red LED (LD4) Lit Sensor B current is too high and
po
wer supply to Sensor B has been
switched o.
A lit red LED on PR‑
10701 always indicates a problem. Red LEDs are always turned o in
normal operation, whether any sensors are connected or not.
PR-23 Series User Guide
IM-EN-PR23-E
90

Vaisala PR-23 Series Specifications

General

Brand	Vaisala
Model	PR-23 Series
Category	Measuring Instruments
Language	English