Lenze i750 User Manual

Safe speed monitor (SSM)
This funcon monit
ors the amount of a set speed value.
DANGER!
Uncontrolled r
otaon of the motor possible if no safety rated encoder system is used.
Possible consequence: Death or severe injuries
▶
Use a safety rated encoder system to use this funcon.
NOTICE
The funcon has no h
ysteresis.
Possible consequences: The safe output can switch frequently when the speed of the drive is
near the monitoring limit.
Mechanical actuators at the safe output could wear out more quickly due to frequent
switching.
▶
In this case, avoid connuous operaon at the monitoring limit.
Funconal descripon
t
0
SSM
n
t
0
1
Status
0x28B2:001
Fig. 19: SSM funcon
This funcon monit
ors the amount of a set speed value. 0x28B2:001
If the speed of the drive is within the monitoring limits, the SSM within limits status is output.
•
St
atus word: 0x2870:002 Bit 5
Acvaon of the funcon
0x28B2:001 > 0 rpm acv
ates the funcon.
Behavior of the funcon in the event of an error
If the monitoring limits are exceeded, no error message is output and no error stop is
triggered.
Only the SSM within limits status is reset.
Funconal sa
fety
Safety funcons
Safe speed monitor (SSM)
130

Lenze i750 Specifications

General

Brand	Lenze
Model	i750
Category	Inverter
Language	English