User Manual

Commissioning
SmartRadar FlexLine Part No.: 4417.762_Rev07
6 - 92 Service Manual
 The relays must be set to Normally Open (jumper, see 6.6.3.1) and
Normally Energized (configuration parameter, see 6.6.3.2).
 In a normal situation, the relay contacts are closed.
 Relays 4 are used to increase the availability: if a problem is
detected with the other relays, the redundancy takes care that the
overfill protection function will work (see also FIGURE 6-23).
 The relays typically can stop a pump or close a valve that is used
filling a storage tank. See FIGURE 6-23.
 Overfill safety analysis, including diagnostic tests is done every
second.
 The 2 FII-DO boards are continuously checking each other for a
correct functioning. This is done every second. In case of
malfunction, 2 retries are executed before the status is definitely
determined.
 The radar scans the overfill protection status every second and will
react accordingly.
6.6.11.4 Overfill Protection Board Actions
The following table shows the important parameters for overfill
protection.
 Both board contacts are always opened if one out of the following
events occurs:
• Level = 0 (product level >= threshold, product level TV = BAD/
UNCERTAIN, TII-XR board does not respond)
• Voltage = 0 (one of more board voltages out of range)
• Board diagnostic = 0 (board status = BAD / UNCERTAIN)
• Board diagnostic of counter part (redundant board) = 0 (board
status = BAD / UNCERTAIN)
• Counter part (redundant board) communication = 0 (other
relay board does not respond)
Output = Function PV
1 = relay contact closed
0 = relay contact opened (safe situation)
Diagnostics = Function health + Board health
1 = status = GOOD, healthy
0 = status = BAD, UNCERTAIN, not healthy (force safe situation)
Level = product level analysis
1 = product level < threshold
0 = product level >= threshold (force safe situation)
0 = product level status = BAD, UNCERTAIN, not healthy
0 = no communication with the TII-XR
Voltage = all FlexConn monitored voltages
1 = voltage within specifications (OK)
0 = voltage too high (one or more) (force safe situation)
Counter part communication = communication with other relay board
1 = valid communication
0 = no communication (force safe situation)