Figure 7-17: Location Of Relay Board Status Led's; Table 7-2: Relay Board Status Led's - Teledyne T360 Operation Manual

Principles of Operation
Table 7-2: Relay Board Status LED's
LED COLOR
D1 RED
D2 YELLOW
D3 YELLOW
D4 YELLOW
D5 GREEN
D6 GREEN
D7 GREEN
D8 GREEN
STATUS LED's
2
7.4.5.6. WATCH DOG CIRCUITRY
I C
214
FUNCTION
Watchdog Circuit
Wheel Heater
Bench Heater
Spare
Sample/Cal Gas
Valve Option
Zero/Span Gas
Valve Option
Shutoff Valve
Option
IR SOURCE
RELAY PCA
Figure 7-17: Location of relay board Status LED's
Special circuitry on the relay board monitors the activity on the I
drives LED D1. Should this LED ever stay ON or OFF for 30 seconds, the
watchdog circuit will automatically shut of all valves as well as turn off the IR
Source and all heaters. The GFC wheel motor will still be running as will the
Sample Pump, which is not controlled by the relay board.
Teledyne API Model T360/T360M Operation Manual
STATUS WHEN LIT
Cycles On/Off Every 3 Seconds under direct control of the
analyzer's CPU.
HEATING
HEATING
N/A
Valve Open to CAL GAS
FLOW
Valve Open to SPAN GAS
FLOW
Valve Open to CAL GAS
FLOW
Source ON
DC VOLTAGE TEST
STATUS WHEN UNLIT
NOT HEATING
NOT HEATING
N/A
Valve Open to SAMPLE GAS
FLOW
Valve Open to ZERO GAS FLOW
Valve CLOSED to CAL GAS
FLOW
Source OFF
POINTS
2
C bus and
07272B DCN6552