ABB FSO-21 User Manual

Configuration 397
 How to configure mute time for zero speed detection
Example 1: Zero speed limit is reached with the SS1 function (or SSE with
emergency ramp), the SBC is not used.
• With an encoder: parameter FSOGEN.32 Zero speed delay time = 20 ms
• Without an encoder: parameter FSOGEN.31 Transient mute time = 20 ms.
Example 2: Zero speed limit is reached with the SS1 function (or SSE with
emergency ramp), a negative SBC delay (parameter SBC.12 STO SBC delay) is
configured in the STO function:
• With an encoder: parameter FSOGEN.32 Zero speed delay time = 20 ms
• Without an encoder: parameter FSOGEN.31 Transient mute time = 20 ms.
Note: If the SBC delay (parameter SBC.12 STO SBC delay) is positive or zero
(0ms), the SBC and STO functions are activated at the same time.
Time
Speed
Zero speed
limit reached
FSOGEN.52 or
FSOGEN.51
= 90 rpm
Mute time elapsed, STO activated
FSOGEN.32 or FSOGEN.31 = 20 ms
Time
Speed
Zero speed
limit reached
FSOGEN.52 or
FSOGEN.51
= 90 rpm
Mute time elapsed, SBC activated
FSOGEN.32 or FSOGEN.31 = 20 ms
SBC delay elapsed, STO activated
SBC.12 = -15 ms

ABB FSO-21 Specifications

General

Brand	ABB
Model	FSO-21
Category	Control Unit
Language	English