Term
Description
Value
Maximal output delay
This time is measured from the request to activate the output in the software to
the output not providing any more power to a resistive load
4 ms
Maximal fault reaction time
Within this time, the wrong state of the digital output is detected and the drive has
the fault reaction “Safety Output Fault”.
50 ms
Test Pulses
The safety module performs test pulses on the digital outputs. The test pulses
have the following characteristics:
The pulse length 1 ms (+/- 10%).
Repetition time: every 1100 ms (+-10%) a test pulse will be produced in
high state
The fault reaction is safe output fault.
Make sure the safe digital input connected to this digital output can handle the
test pulsed.
For a better diagnosis, it is recommended to check the test pulses with the
connected digital input module.
Table 62: Characteristics of the safe output
Figure 22: Schematics of the safe digital output (one channel)
7.13.2 Parameters
The safe digital output has the following parameter for configuration.
Name
UPID
Type
Description
Safe Output
47A8h
UInt8
Selects the state of a safety function, which is provided at the safe digital output.
00h: Unused (Default)
01h: STO, outputs the value of the Safety Fn State STO (UPID 1A10h)
02h: SS1, outputs the value of the Safety Fn State SS1 (UPID 1A11h)
03h: SOS, outputs the value of the Safety Fn State SOS (UPID 1A12h)
04h: SS2, outputs the value of the Safety Fn State SS2 (UPID 1A13h)
05h: SLS, outputs the value of the Safety Fn State SLS (UPID 1A1Ch)
06h: Brake Output Mirror, outputs the value of Safety Fn State Brake Released (UPID
1A20h)
07h: High: Safe output always high. E.g. as supply of the safe inputs.
Table 63: Safe digital output parameters
2S Drive Systems / 0185-1174_E_1V1_SM_C1251-2S / NTI AG
0185-1174_E_1V1_SM_C1251-2S / 2021-11-26 16:43 (Rev. 12500)
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