Siemens simatic c7-621 Hardware Installation Manual page 80

C7-621 Digital I/Os
Digital Outputs The following table shows the technical data of the digital outputs of the C7
CPU.
Module-Specific Data
Number of outputs
Cable length
Unshielded
Voltages, Currents, Potential
Rated load voltage L+
Reverse polarity protection
Total current of the outputs
(per group: 0.0 to 0.7 or
1.0 to 1.7)
Up to 20 C
Up to 45 C
Floating
Status, Interrupts, Diagnostics
Interrupts
Diagnostic functions
6-6
Data for Selecting an Actuator
16 Output voltage
At signal "1"
Output current
max. 600 m
For signal "1"
Rated value
24 V DC, 0.5 A
Permitted range
no
For signal "0"
(residual current)
Load resistance range
Lamp load
max. 4 A
max. 2 A
Parallel connection of 2
outputs
no
For redundant activation of
a load
no
For increased power
no
Activation of a digital input
Switching frequency
With ohmic load
With inductive load to IEC
947-5-1, DC 13
With lamp load
Limitation (internal) of the
inductive cut-off voltage
Short circuit protection of the
output
Switching threshold
min. L+ (- 0.8 V)
0.5 A
5 mA to 0.6 A
max. 0.5 mA
48 to 4 k
max. 5 W
Possible, only outputs
of the same group
Not possible
Possible
max. 100 Hz
max. 0.5 Hz
max. 100 Hz
Typically L+ (- 48 V)
Yes, clocked
electronically
Typically 1 A
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01