51
Configuration and adjustment variables
Modbus
address
CANopen
address
Code
Read/
Write
Name/Description/Possible values
7122
2029 / 17
Atr
R/WS
Automatic restart
DANGER
UNINTENDED EQUIPMENT OPERATION
• The automatic restart can only be used on machines or installations which do not pose
any danger to either personnel or equipment.
• If the automatic restart is activated, R1 will only indicate a fault has been detected once
the time-out period for the restart sequence has expired.
• The equipment must be used in compliance with national and regional safety regulations.
Failure to follow these instructions will result in death or serious injury.
This is only possible for 2-wire level detection control (tCC = 2C and tCt = LEL or PFO).
Factory setting: 0
0 = "nO": Function inactive
1 = "YES": Automatic restart, after locking on a detected fault, if the cause has disappeared and
the other operating conditions permit the restart. The restart is performed by a series of
automatic attempts separated by increasingly longer waiting periods: 1 s, 5 s, 10 s, then 1 min
for the following periods.
If the restart has not taken place once the configurable time tAr has elapsed, the procedure is
aborted and the drive remains locked until it is powered down then powered up.
The following conditions permit this function:
- External fault (EPF)
- Loss of 4-20 mA reference (LFF)
- CANopen interuption (COF)
- Line overvoltage (OSF)
- Loss of a line phase (PHF)
- Loss of a motor phase (OPF)
- DC bus overvoltage (ObF)
- Motor overload (OLF)
- Serial link (SLF)
- Drive overheating (OHF)
The drive status relay remains activated if this function is active. The speed reference and the
operating direction must be maintained.
7123
2029 / 18
tAr
R/WS
Max. duration of restart process
Factory setting: 0
0 = "5" : 5 minutes
1 = "10" : 10 minutes
2 = "30" : 30 minutes
3 = "1h": 1 hour
4 = "2h": 2 hours
5 = "3h": 3 hours
6 = "Ct": Unlimited (except for Loss of a motor phase OPF and Loss of a line phase PHF
detected faults, when the process is limited to 3 hours)
This parameter is active if Atr = YES. It can be used to limit the number of consecutive restarts
on a recurrent detected fault.
7124
2029 / 19
rSF
R/WS
Clearing the current detected fault
Factory setting: 0
0 = "nO": Not assigned
129 = "LI1": Logic input LI1
130 = "LI2": Logic input LI2
131 = "LI3": Logic input LI3
132 = "LI4": Logic input LI4
133 = "LI5": Logic input LI5
134 = "LI6": Logic input LI6