5.2 - Service electronics
86
TCT-2301 Service instructions
M2007/3en
©BTG 2004
5.2.2
Electronics card LED functions
1. DI1
Digital in 1 (not used)
2. DO2
Digital out 2 (not used)
3. DO1
Digital out 1. Lit when PCD-1000 function is activated. (Option)
4. PWR OK.
Lit when power to the card is on
5. MODE.
Indicate program function.
– Slow flash (approx. 2 second interval). The program is running
normal.
– Fast flash (approx. 2 second interval). Indicates that the processor
is running but doesn't have any software. Contact your BTG office.
– No flash (lit or dark). Processor or program is not running.
6. ALARM.
Lit when alarm function is activated.
7. IN2 and IN1
Indicates selected range, see below. (Lit=1 Dark=0)
8. Power switch on incoming power supply. Lit when 24 V DC is sup-
plied to the card (before fuse F1).
7
5 4
Fig 47 LEDs on the
electronics card
1 DI1
2 DO2
3 DO1
4 PWR OK
5 MODE
6 ALARM
7 IN2 and IN1
8 Power switch
8
2 1
6
3
IN1
IN2
Range
0
0
1
1
0
2
0
1
3
1
1
4