BMR SFU 0303, Manual

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7.2.4 Safety functions: Power stage pulse lock or STO/Safe Torque Off
✓
The SFU0303 series is equipped with safety functions for safe standstill and against unintentional
startup. This is also referred to as power stage pulse lock or inhibit in the following. This can be a single
channel version or a dual-channel version
✓
A single-channel pulse lock inhibitor (
→
7.8) is integrated in the SFU as standard function.
✓
Alternatively, a dual-channel pulse lock (
→
7.9) in accordance with Safe Torque Off Standard STO is
also possible in accordance with Stop Category 0 as in IEC 61800-5-2. This is implemented via an
additional module.
✓
These safety functions are only alternatively installed and in function. With an STO module, the single-
channel pulse lock is automatically inactive.
✓
The precondition for the correct start behavior is a correctly controlled, enabled pulse lock as well as
the suitable characteristic curve for the connected motor.
Attention :
For operation, these must be wired accordingly. Otherwise, the device cannot be put into operation.
(
→
7.7 Safety functions)
7.2.5 Status display
The current status of the converter is displayed on the status LED display and with mounted operating
panel the status is displayed in plaintext on the LCD-display, additionally.
(
→
7.4 Setup) .