Kübler SMC1.3, Safety Manual

Page: 186 / 235

R60047.0002 - Index 2 EN – page 66 / 115
12.3 Frequency Band (Switch Mode = 2)
With parameter setting “Switch Mode” = 2, the frequency is monitored within a frequency
band.
The function is always active and independent of the direction of rotation. The
switching points of the band are located at /- Hysteresis.
Relevant Parameters Remark
„Switch Mode “
= 2
„Pulse Time “
statically = 0 or pulse duration in x seconds
„Hysteresis “
+/- range (center)
„Startup Mode“ type of start-up delay
„Startup Output“ output assignment for start-up delai
„Lock Output“ lock function
„Output Mode“ homogenous or inverse output configuration (affects the Safety Integrity
Level SIL/PL)
„Presel. . “
center
„Delay “
shutter release delay
„Input Mode “
configuration of the control inputs (affects the safety level SIL/PL)
„ IN Function“
function of the control input
„ IN Config“
switching behaviour (single-channel, two-channel, inverse, homogeneous,
dynamic, static)
„GPI Err Time“ Max. permissible delay time during illegal conditions
Relevant input functions Remark
Clear lock function, e.g. parameter „IN1 Function“ = 1 … 6 Only when lock function is active
Switchover switching points, e.g. parameter „IN2 Function“ = 13 Only when switchover is active
Example:
With Presel = 1000.0 Hz and Hysteresis = 10 %, frequencies |f| < 900 Hz are detected as
underspeed and frequencies |f| > 1100 Hz as overspeed.