MOOG
ID
No.:
CB40859-001
Date:
02/2018
MSD Servo Drive - Device Help
30
4 Power Stage
Mode 5
Same as mode 1, but with absolute voltage levels and without a validation check.
P 2942[0] - POWF_VOn is used to define the power failure detection limit. P 2942[1]
- POWF_VRef is used to define the voltage setpoint. The configured values will not
be checked to see if they are valid. The user themselves will be responsible for
ensuring that the values entered make sense.
Mode 6
Same as mode 2, but with absolute voltage levels and without a validation check.
P 2942[0] - POWF_VOn is used to define the power failure detection limit. P 2942[1]
- POWF_VRef is used to define the voltage setpoint. The configured values will not
be checked to see if they are valid. The user themselves will be responsible for
ensuring that the values entered make sense.
Mode 7
Same as mode 6, but with pulse operation.
P 2942[0] - POWF_VOn is used to define the power failure detection limit. P 2942[1]
- POWF_VRef is used to define the voltage setpoint. The configured values will not
be checked to see if they are valid. The user themselves will be responsible for
ensuring that the values entered make sense.
4.2.4 Parameters
P No.
Index Name / Setting
Unit Function
2940
0
CON_PowerFail
Off (0)
RET(1)
NORET(2)
NOLIM(3)
VFC_NOLIM(4)
RETABS(5)
NORETABS(6)
NORETABSPULSE(7)
2941
0
A/V
1
ms
2
CON_POWF_VCtrl
Kr
Tn
imax
A
3
imax_pos
A
4
n_min
rpm
2942
0
V
1
V
2943
0
CON_POWF_VLim
POWF_Von
POWF_VRef
CON_POWF_RetTime
ms
Power failure bridging: selector
Function disabled
Function enabled. Return of power allowed if it
occurs within defined time; otherwise, trigger
error upon return
Function enabled. Return of power not allowed -
> Trigger error upon return.
Function enabled. Return of power cannot be
detected.
Speed reduction (VFC) as fast as possible (HF
software)
Same as "RET(1)", bit with absolute voltages
and without validation checks.
Same as “NORET(2)", bit with absolute
voltages and without validation checks.
Same as "NORETABS(6)", but with pulse
operation.
Power failure bridging
Power failure bridging: Gain
Power failure bridging: Reset time
Power failure bridging: Maximum (negative) q
current
Power failure bridging: Maximum q current
Power failure bridging: Minimum speed for
voltage controller
Voltage limit for power failure
Power failure detection limit
Voltage reference value
Setting of time window in which mains power
can be restored
701
MON_ActValues
12
u_zkoff
VDC
17
u_bc_on
VDC
UZK undervoltage threshold
Braking chopper threshold
Table 4.7: “Power failure bridging” parameters
