SEW-Eurodrive MOVIPRO Ethernet/IP - 13.7.5 Parameter group 5: Monitoring functions

13
Parameter setting
Parameter descriptions
Manual – MOVIPRO
®
with EtherNet/IP™ or Modbus/TCP Fieldbus Interface
209
13.7.5 Parameter group 5: Monitoring functions
The processes of the drive-specific parameters are monitored with this parameter
group in order to be able to respond to inadmissible deviations. Some of the monitor-
ing functions are available separately in both parameter sets. Activation of a monitor-
ing function triggers an error response (→2224).
P50. Speed monitoring
P500/P502 Speed monitoring 1/2
1
2
Setting range: Off/motor/regenerative/motor/regenerative
The speed setpoint can only be achieved if there is sufficient torque available to meet
the load requirements. If the internal current limit (→2203) reaches the external cur-
rent limit, the power section "PFA-..." assumes that the torque has reached its max-
imum and the desired speed cannot be attained. If this state persists for the duration
of the deceleration time (→2209), the speed monitoring trips.
In the case of a hoist, activate the speed monitoring and set the deceleration time to
as small a value as possible. Speed monitoring is not that important for safety since
an incorrect movement of the hoist does not necessarily mean operation in the current
limitation.
P501/P503 Delay time1/2
1
2
Setting range: 0–1–10s
The set current internal limit can be reached briefly during acceleration, deceleration,
or load peaks. Corresponding setting of the deceleration time can prevent uninten-
tional, sensitive activation of the speed monitoring. The speed monitoring should only
trip when the current limit is reached permanently for the duration of the set decelera-
tion time (→2209).
P504 Encoder monitoring motor
Setting range: On/Off
• Setting "On": A wire break between the device and motor encoder will be detected
directly when using sin/cos encoders and TTL encoders. In the case of a defective
connection, the error message "A1.F14" (encoder) is displayed. The error mes-
sage is also generated in the inhibited state of the device.
• Setting "Off": A wire break between the device and motor encoder is not detected
directly. If the speed monitoring is not deactivated, the error message
"A1.F08" (speed monitoring) is displayed in the case of a defective connection.
The error message is only generated in the enabled state of the device.
INFORMATION
Encoder monitoring is not a safety function. If you use a HIPERFACE
®
encoder, en-
coder monitoring is always active (including for the track) regardless of the parameter
setting.
16998413/EN – 12/2016