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MEASURING POINTS OF BKS AND OXS
17 - 2
ETC00781(1) Series 100 e 10/2001
Rosemount Analytical
17.1.3 Reference Voltage negative
Measuring point: X 12
Measuring device: DVM
Signal: inverse [reference voltage positive]
The difference between negative reference voltage and positive reference voltage must
be no more than 10 mV (U
ref. pos.
+ U
ref. neg.
≤ ± 10 mV) !
If the difference is bigger, exchange BKS.
17.1.4 Motor Drive (for IR channel only)
Measuring point: LB 1
Measuring device: Oscilloscope
Signal: square impuls U = 6 V
SS
(± 0,3 V)
frequency = 1152 Hz (± 20 Hz)
Failure: No signal or incorrect frequency
Possible reasons: a) internal 6 V DC absent (see chapter 17.1.1)
b) µP do not work:
1. Is the EPROM insert correctly ? (see chapter 28)
2. Perform a RESET (see chapter 8.14).
3. BKS faulty (exchange BKS).
MEASURING POINTS OF BKS