Electrical Parameters Of Digital Outputs - Siemens SIMATIC S7-300 Manual

4 digital outputs All outputs have equal priority. Switching functions are allocated to an output
(DO1...4)
number by way of machine data.
These four outputs are intended for wiring of application-specific signals.
Possible uses include:
See Section 5.3.1 for further applications.
Table 4-12
Supply voltage
Electrical isolation
Output voltage
Output current on signal "1"
Switching rate
Load power sup-
Here a 24-V load power supply must be connected. The unit will not operate
ply (L+, M)
if the poles are reversed.
Note
Note the SIMATIC setup guidelines. In particular, the M terminal (reference
potential) must be connected with the chassis ground of the programmable
controller (M terminal on the terminal block of the S7-300 CPU).
see manual S7–300 Programmable Controller, Hardware and Installation,
Order No.: 6ES7 030-0AA01-8AA0.
FM 354 Servo Drive Positioning Module
Position reached and stopped
Switching function M command
Forward/backward rotation

Electrical parameters of digital outputs

at ambient temperature of 40 C
– Rated value
– Permissible value range
– Lamp load
at ambient temperature of 60 C
– Rated value
– Permissible value range
Wiring the FM 354
24 V DC
(allowable range: 20.4...28.8 V)
No
0 Signal: Residual current max. 2 mA
1 Signal: (Power supply –3 V)
0.5 A (total current 2 A)
5 mA...0.6 A (over power supply range)
max. 5 W
0.1 A (total current 0.4 A)
5 mA...0.12 A (over power supply)
Resistive load: max. 100 Hz
Inductive load: 0.25 Hz
4-17