Siemens SIMATIC S7-300 Series Reference Manual page 71

Technical Specifications of the Digital Outputs of the CPU 314IFM
Remarks
When the supply voltage is switched on a pulse occurs on the digital outputs! This
can be 50 ms long within the permissible output current range. You must not,
therefore, use the digital outputs to trigger high-speed counters.
Module-Specific Data
Number of outputs
Cable length
S
Unshielded
S
Shielded
Voltages, Currents, Potentials
Rated load current L+
S
Polarity reversal
protection
Total current of outputs (per
group)
S
(horizontal
configuration)
up to 40°C
up to 60°C
S
(vertical configuration)
up to 40°C
Galvanic isolation
S
between channels and
backplane bus
S
Between the channels
in groups of
Permissible potential
difference
S
Between different
circuits
Insulation tested at
Current consumption
S
on L+ supply (no load)
Status, Interrupts; Diagnostics
Status display
Interrupts
Diagnostic functions
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Actuator Selection Data
16 Output voltage
S
For "1" signal
max. 600 m Output current
S
For "1" signal
max. 1000 m
Rated value
Permissible range
24V DC
S
For "0" signal
No
(residual current)
Load impedance range
Lamp load
Parallel connection of 2
max. 4 A outputs
S
max. 2 A
For dual-channel
triggering of a load
max. 2 A
S
For performance
increase
Triggering of a digital input
Yes
Switching frequency
S
Yes
For resistive load
S
8
For inductive load to
IEC947-5-1, DC 13
S
For lamp load
75V DC
60V AC
Inductive breaking voltage
limited internally to
500V DC
Short-circuit protection of
the output
S
Response threshold
max. 100 mA
1 green LED per
channel
None
None
CPUs
min. L+ (-0.8 V)
0.5 A
5 mA to 0.6 A
max. 0.5 mA
48 W to 4 kW
max. 5 W
Possible, only
outputs of the same
group
Not possible
Possible
max. 100 Hz
max. 0.5 Hz
max. 100 Hz
typical L+ (- 48 V)
yes, electronically
timed
typical 1a
1-55