310 Parameters
31.33 Emergency ramp
supervision delay
If parameter 31.32 Emergency ramp supervision is set to 0%,
this parameter defines the maximum time an emergency stop
(mode Off1 or Off3) is allowed to take. If the motor has not
stopped when the time elapses, the drive trips on 73B0
Emergency ramp failed, sets bit 8 of 06.17 Drive status word
2, and coasts to a stop.
If 31.32 is set to a value other than 0%, this parameter
defines a delay between the receipt of the emergency stop
command and the activation of the supervision. It is
recommended to specify a short delay to allow the speed
change rate to stabilize.
0 s
0…32767 s Maximum ramp-down time, or supervision activation delay. 1 = 1 s
31.35 Main fan fault
function
Selects how the drive reacts when a main cooling fan fault is
detected.
Note: With an inverter unit consisting of one or more frame
R8i inverter modules with speed-controlled fans, it may be
possible to continue operation even if one main fan of a
module stops. When fan failure is detected, the control
program will automatically
• set the other fan of the module to full speed
• set the fans of the other modules (if any) to full speed
• decrease the switching frequency to a minimum, and
• disable the supervision of temperature difference between
the modules.
If this parameter is set to Fault, the inverter unit will trip (but
still carry out the actions listed above). Otherwise, the inverter
will attempt to continue operation.
Warning
Fault The drive trips on fault 5080 Fan.0
Warning The drive generates an A581 Fan warning. 1
No action No action taken. 2
31.36 Aux fan fault
bypass
(Only visible with a ZCU control unit)
Temporarily suppresses auxiliary fan faults.
Certain drive types (especially those protected to IP55) have
an auxiliary fan built into the front cover as standard. If the fan
is sticking or disconnected, the control program generates a
fault (5081 Auxiliary fan broken).
If it is necessary to operate the drive without the front cover
(for example, during commissioning), this parameter can be
activated to temporarily generate a warning (A582 Auxiliary
fan missing) instead of the fault.
Notes:
• The parameter must be activated within 2 minutes of
control unit reboot (either by cycling the power or by
parameter 96.08).
• The parameter will be in effect until the auxiliary fan is
reconnected and detected, or until the next control unit
reboot.
Off
Off Normal operation. 0
Temporari ly
bypassed
The auxiliary fan fault is temporarily replaced by a warning
indication.
The setting will revert automatically to Off.
1
No. Name/Value Description Def/FbEq16
To Next Page
Loading...
