Lenze ECS Série Instructions De Montage page 126

4 Electrical installation
Control terminals
Safe torque off
4.3.3.7 Example: Wiring with electronic safety control unit for category 3
Fig. 4−13 Example: Wiring with "Siemens 3TK2842"safety control unit
T1
T2
The motor is shutdown in accordance with stop category 1 of EN 60204
ƒ
when the safety function is requested.
The delay time of the safety control unit and the quick stop deceleration
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time have to be coordinated with the brake closing time.
The diode−capacitor combination prevents the test pulses of the safety
ƒ
control unit from disturbing the smooth running of the motor, as
otherwise a short−time inhibit of the controller cannot be ruled out. It can
be procured from the company Pilz (Pilz order number: 774195) as a
complete terminal.
Manual test of the disconnecting paths
The disconnecting paths have to be checked individually in succession.
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If the test keys (T1, T2) are pressed, the motor has to be torqueless
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immediately and the brake has to engage.
When the safety control unit is switched off, or if both test keys are
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pressed at the same time, the feedback has to signalise "STO". This
feedback is not reliable and only serves as an information for the operator
that a switch−on is possible now.
If the actual state deviates from the facts described here, switch off the
ƒ
drive immediately. Eliminate the fault before the restart is carried out.
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Test key 1
Test key 2
l
ECSXA102
EDKCSEX064 DE/EN/FR 4.0