3 . R e p a i r I n s t r u c t i o n s
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3.3.13
SAD Level Test
The level test measures the test threshold, which LLC generates to drive the SAD with a
permanent test pulse. This is compared with the calibrated test threshold
±
50 mV. If the
measured test threshold is in this limit LLS switches off the +24 V for 3 s. This is detected by
LLC as "test passed".
Test code
30
Repeats until error message
3
ID error message
1161: SAD (Ref.) test not OK
Actions after error
Return to window: Repeat blood line self test with
key.
LLC Test
Code
LLC Test Steps
LLS Test Steps
LLS Test
Code
1.
3002x
Test Prerequisites:
Blood side must not be stopped by TLC or LLC.
If stopped: Message 1140 is displayed.
No timeout.
2.
Test code = 30 to LLS
Test code = 30 back to LLC
3.
3010x
Set wait timer
Test initialisation
30000
4.
3020x
After 3 s signal EV_DAUERTEST_SAD_EIN send to
BIOS-SAD-Task
5.
If deviation SAD-Ref
≤
50 mV then carry on
30001
6.
If deviation SAD-Ref
≤
50 mV then acknowledge with
switch-off VGB
30002
7.
Acknowledge with switch-off VGB
30003 -
30008
8.
3030x
Wait for B24OFF (timeout 10 s)
If B24OFF signal EV_DAUERTEST_SAD_AUS send to
BIOS-SAD-Task
9.
VGB ON
30009
10.
3040x
Wait for B24ON (timeout 10 s)
11.
3099x
Completed
3.3.14
SAD Counter Test
The counter test measures the time base of the counter for the TIMECONTR signal. LLC
triggers and a low pulse of 1666 µs is generated at the TIMECONTR signal, which is measured
by LLS. If this pulse is in the range of 1666 µs
±
30 µs LLS switches off the +24 VB for 3 s. This
is detected by LLC as "test passed".
Test code
31
Repeats until error message
3
ID error message
1162: SAD (Freq.) test not OK
Actions after error
Return to window: Repeat blood line self test with
key.
LLC Test
Code
LLC Test Steps
LLS Test Steps
LLS Test
Code
1.
3102x
Prerequisites for Test:
Blood side must not be stopped by TLC or LLC.
If stopped: Message 1140 is displayed.
No timeout.
2.
Test code = 31 to LLS
Test code = 31 back to LLC
3.
3110x
Send signal EV_COUNTER_TEST_SAD to BIOS-SAD-
Task
Test initialisation
31000
4.
If measurement of TIMECONTR pulse length 1629 µs
≤
t
≤
1689 µs, then acknowledge with switch-off VGB
31001
5.
Acknowledge with switch-off VGB
31002 –
31007
6.
3120x
Wait for B24OFF (timeout 10 s)
7.
VGB ON
31008
8.
3130x
Wait for B24ON (timeout 10 s)
9.
3199x
Completed
