Controlling the safety functions
7.3 Control of "STO" and "SS1" via terminals on the Control Unit and the Motor/Power Module
Safety Integrated
170 Function Manual, 05/2010, A5E03264275A
Functional principle
The first shutdown path for the integrated safety functions is activated via a digital input on
the control unit; digital inputs DI0 to DI7 are available for this purpose.
The second shutdown path for the integrated safety functions is activated via the terminals (-
X41:1, -X42:2) on the Control Interface Module of the Power Module.
The selection and deselection must be executed concurrently. The time delay that is
unavoidable due to mechanical switch processes, for instance, can be adapted via
parameters.
The selection of the safety function on the Control Unit and on the Control Interface Module
of the Motor Module must be executed over two channels. A switch in accordance with ISO
13850/ EN 418, positive opening in accordance with EC 60947-5-1, or a certified safety
controller must be used as activation element.
DANGER
Responsibility for selecting the correct activation element for the purpose of compliance of
the overall system with the required standard (DIN EN ISO 13849-1 (formerly EN954-1)
Cat. 3 PL d or DIN EN 61508 SIL2) rests with the user.
Terminal strip –X41 on the Control Interface Module of the Motor Module
Table 7- 18 Terminal strip –X41 on the Control Interface Module of the Motor Module
Terminal Function Technical data
-X41:2 EP +24V (enable pulses)
-X41:1 EP M1 (Enable Pulses)
Supply voltage: 24 V DC (20.4 V...28.8 V)
Power consumption: 10 mA
Signal propagation times:
L → H 100 µs
H → L: 1000 µs
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