Siemens SIMATIC S7-300 Module data - Page 202

Digital Modules
3-118
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical data of the SM 327; DI 8/DX 8 x DC 24 V/0.5 A, parameterizable
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 120
Weight Approx. 200 g
Data for Specific Module
Supports clocked
operation
No
Number of inputs 8 digital
Number of inputs/outputs 8 single,
parameterizable
Length of cable
• Unshielded
• Shielded
max. 600 m
max. 1000 m
Voltages, Currents, Potentials
Rated load voltage L+ 24 VDC
Number of inputs that can be
triggered simultaneously
• Horizontal configuration
Up to 60 C
• Vertical configuration
Up to 40 C
16
16
Total current of the outputs
(per group)
• Horizontal configuration
Up to 40 C
Up to 60 C
• Vertical configuration
Up to 40 C
max. 4 A
max. 3 A
max. 2 A
Isolation
• Between channels and
backplane bus
Yes
• Between the channels No
Permitted potential difference
• Between the different
circuits
75 VDC / 60 VAC
Insulation tested with 500 VDC
Current consumption
• From the backplane bus
• From load voltage L+
(without load)
max. 60 mA
max. 20 mA
Power dissipation of the module typ. 3 W
Status, Interrupts, Diagnostics
Status display Green LED per channel
Interrupts None
Diagnostic functions None
Data for Selecting a Sensor
Input voltage
• Rated value
• For signal “1”
• For signal “0”
24 VDC
15 to 30 V
–30 to 5 V
Input current
• At signal “1” typ. 6 mA
Input delay
• At “0” to “1”
• At “1” to “0”
1.2 to 4.8 ms
1.2 to 4.8 ms
Input characteristic curve According to
IEC 61131, type 1
Connection of Two-Wire
BEROs
• Permitted bias current
Possible
max. 1.5 mA
Data for Selecting an Actuator
Output voltage
• At signal “1” min. L + (– 1,5 V)
Output current
• At signal “1”
Rated value
Permitted range
0.5 A
5 mA to 0.6 A
• At signal “0”
(leakage current)
max. 0.5 mA
Output delay (for resistive load)
• At “0” to “1”
• At “1” to “0”
max. 350 s
max. 500 s
Load resistor range 48  to 4 k
Lamp load max. 5 W
Parallel connection of
2 outputs
• For redundant triggering of
a load
Possible
• To increase performance Not possible
Triggering a digital input Possible
Switch rate
• For resistive load
• Inductive load according to
IEC 947-5-1, 13 DC
• For lamp load
max. 100 Hz
max. 0.5 Hz
max. 10 Hz
Limit (internal) of the inductive
circuit interruption voltage up
typ. L + (–54 V)
Short-circuit protection of the
output
Yes, electronic
• Threshold on 1 A, typ.