Relay Pca Watchdog Indicator (D1); Figure 10-7: Status Led Locations - Relay Pca; Table 10-1: Relay Pca Status Leds - Teledyne T700 Operation Manual

Teledyne API – Model T700 Dynamic Dilution Calibrator
D9 (Green) – Photometer Pump Status
D8 (Green) O
D7 (Green) – Photometer Meas/Ref Valve
D15 (Yellow) - Photometer Lamp Heater
D16 (Yellow) – O

Table 10-1: Relay PCA Status LEDs

LED COLOR
D1
D2-6
1
D7
2
D8
D9
1,2
D6
D10 - 14
1
D15
2
D16
1
Only applies on calibrators with photometer options installed.
2
Only applies on calibrators with O

10.3.3.4. Relay PCA Watchdog Indicator (D1)

06873E DCN7106
Generator Valve Status
3
D6 (Green ) – GPT Valve
Generator Lamp Heater
3
D1 (RED)
Watchdog
Indicator
Figure 10-7: Status LED Locations – Relay PCA
DESCRIPTION
Watchdog Circuit; I
Red
operation.
Green Photometer Meas/Ref Valve
Green O generator Valve status
3
Green Photometer Pump status
Yellow GPT Valve status
Yellow Photometer Heater Status
Yellow O Generator Heater Status
3
generator options installed.
3
The most important of the status LEDs on the relay PCA is the red I
LED, D1. It is controlled directly by the calibrator‟s CPU over the I
circuitry on the relay PCA watches the status of D1. Should this LED ever stay ON or
OFF for 30 seconds (indicating that the CPU or I
Watchdog Circuit automatically shuts all valves and turns off all heaters and lamps.
2
C bus
2
Blinks when I
SPARE
When lit the valve opens the
REFERENCE gas path
When lit the valve open to O
gas path
When lit the pump is turned on.
When lit the valve opens the GT
Chamber
SPARE
When lit the photometer UV lamp heater
is on
When lit the O
is on
2
C bus has stopped functioning) this
Principles of Operation
FUNCTION
C bus is operating properly
generator
3
generator UV lamp heater
3
2
C Bus watchdog
2
C bus. Special
275