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Safety functions 57
This restriction is relevant only when FSO module is used with the safe speed
estimate, not when it is used with the encoder.
For more information, see the firmware manual of your drive.
Ramp monitoring
The ramp monitoring is configured with five parameters as described below.
ID
Description
A
Minimum deceleration time from the Scaling speed to zero. Configured for each SARn
ramp,
n = 0…1 separately.
For example for SAR0: parameter
B
Target time for deceleration from the Scaling speed to zero. Configured for each SARn
ramp, n = 0…1 separately.
For example for SAR0: parameter
C
Maximum deceleration time from the Scaling speed to zero. Configured for each SARn
ramp, n = 0…1 separately.
For example for SAR0: parameter
D
Initial allowed range for the SARn ramp: value of parameter
. This parameter moves the location of the maximum ramp forward on the time
axis, when monitoring is started, that is, at time of D, the maximum limit is the value of
the motor speed, that was in use when the monitoring started. Common for all ramps
SARn, n = 0…1.
Speed
B
C
A
E
Speed
Motor speed
Ramp monitoring started
Defining the ramp monitoring limits
Ramp monitoring using the ramps
D
Limit hit
*
*
* Lower monitoring limit is always 30 rpm below actual
speed.Starting point of the upper monitoring limit is based
on maximum deceleration slope (E/C) and D.
Summary of Contents for FSO-21
Page 1: ... OPTIONS FOR ABB DRIVES FSO 21 safety functions module User s manual ...
Page 4: ......
Page 16: ...16 Safety instructions ...
Page 34: ...34 Safety information and considerations ...
Page 52: ...52 Overview ...
Page 236: ...236 PROFIsafe ...
Page 265: ...PROFIsafe 265 2 Select your CPU from the list 3 Install the FENA 21 GSDML file ...
Page 275: ...PROFIsafe 275 20 In ABB_Drive FB add blocks DPRD_DAT and DPWR_DAT 21 Insert values to blocks ...
Page 282: ...282 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Page 286: ...286 PROFIsafe ...
Page 304: ...304 Installation ...
Page 400: ...400 Configuration ...
Page 488: ...488 Verification and validation ...
Page 506: ...506 Fault tracing ...
Page 514: ...514 Maintenance ...
Page 536: ...536 Technical data ...