Technical data

Chapter 3 Digital input modules Manual VIPA System 200V
3-8 HB97E - SM - Rev. 09/19
221-1BF20 - DIa 8xDC 24V
DIa 8xDC 24V VIPA 221-1BF20
The digital input module accepts the binary control signals from the
process level and provides an electrically isolated interface to the central
bus system.
All inputs are configurable as alarms. With the rising edge of the input, the
alarm is activated. The alarm calls the OB 40 in the CPU. If this OB isn't
available, the OB 85 is called. If this OB is also not programmed, the CPU
switches to STOP.
The module has 8 channels, each one with a light emitting diode to indicate
the status of the channel.
• 8 alarm inputs, isolated from the backplane bus
• nominal input voltage DC 24V
• suited for urgent signals (switches and proximity switches)
• Status indicator for each channel by means of an LED
1
2
3
4
[1]
[2]
[3]
[4]
Label for module description
Label for the bit address with
description
LED status indicator
Edge connector
LED
.0... .7
Description
LEDs (green)
I+0.0 to I+0.7
A "1" signal level is
recognized as of app.
15V and the respective
LED is turned on
DIa 8xDC24V
SM 221
.0
.1
.2
.3
.4
.5
.6
.7
VIPA 221-1BF20
X
2
34
1
2
3
4
5
6
7
8
9
I0
Pin
1
2
3
4
5
6
7
8
9
10
Assignment
not connected
Input I+0.0
Input I+0.1
Input I+0.2
Input I+0.3
Input I+0.4
Input I+0.5
Input I+0.6
Input I+0.7
Ground
Order data
Description
Properties
Construction
Status indicator
pin assignment