Siemens V20_EN_rev01-08032019.docx
6-1
6 CONTROL UNIT
6.1
DESCRIPTION
The logical Control unit and adjustment is integrated in the power unit of the machine
6.2
SAFETY WARNING
WARNING
Danger fire in case of overheating in case of insufficient free ventilation spaces:
Absolutely observe a 50 mm clearance up and down the Control Unit and the Control Unit Adapter
Be sure that the ventilation openings are not blocked by connecting cables.
WARNING
Incorrect parameterization can result in machine malfunctions and consequently the risk of death and injury
6.3
USER TERMINALS
There are 19 terminals available through which the input / output connections can be made:
6.4
TECHNICAL DATA
Following there are the technical data related to the user interface terminals:
No
Terminal
marking
Description
1
10V
10V output (tolerance ± 5 %) referred to 0V, maximum 11 mA, short cir-
cuit protected
Analog
inputs
2
3
Al1
Al2
Mode:
AI1: Single-ended, bipolar current and
voltage mode
AI2: Single-ended, unipolar current
and voltage mode
Isolation to control circuit:
None
Voltage range:
AI1: -10 - +10V; AI2: 0 - 10V
Current range:
0 - 20 mA (4 to 20 mA - software se-
lectable)
Voltage mode accuracy:
± 5% full scale
Current mode accuracy:
± 5% full scale
Input impedance:
Voltage mode: > 30 K
Current mode: 235 R
Resolution:
10-bit
Wire break detect:
Yes
Threshold 0
⇒
1 (used as DIN):
4,0V
Threshold 1
⇒
0 (used as DIN):
1,6V
Response time (digital input
mode):
4 ms ± 4 ms
Analog
4
A01
Mode:
Single-ended, unipolar current mode
Isolation to control circuit:
None
