SSR Min Limit
SSR t1
SSR td2
SSR Max Limit
t
Speed
e30bi399.10
Illustration 58: The SSR Function in the Time Monitoring Mode
N O T I C E
When you set the value of SSR Min Limit above zero, you must take into account the situations where the motor is stopped or
changes direction. If the speed goes below the SSR Min Limit and the SSR function is monitoring, the SSR function detects a
violation. The speed can be below the SSR Min Limit, for example, if the STO function or the SOS function is active. After the STO
function or the SOS function is deactivated, the SSR function can start monitoring again after the time set with SSR t1, and detect
a violation. It may be necessary to disable the SSR request while the motor is stopped. See 6.4 Combinations of Safety Functions.
6.3.4.3 Ramp Monitoring
SSR Min Limit
SSR t1
SSR td1
SSR Max
t
Speed
SSR td2
e30bi400.10
Illustration 59: The SSR Function in the Ramp Monitoring Mode
AQ319736045637en-000101 / DPD01798100 | Danfoss A/S © 2021.06
Safety Functions
VACON® NXP Advanced Safety Options
Operating Guide
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