8-way Switching Actuator I/O-08B-24V-1A

I/O module with 8 binary inputs and 8 relay outputs. For control tasks that only require low voltage.

Quick Facts

  • 8 binary inputs
  • 8 relay outputs, 24V/1A
  • Special function: emergency operation
  • Protective applications
  • Remote controls
  • Fault alarm systems
  • Connection to external systems via contacts

The I/O module I/O-08B-24V can be used to switch 8 circuits with a maximum of 24V/1A. 8 optocoupler inputs 12-48V (4 inputs each on a common counter potential) are available as inputs. The functions of all inputs and outputs are freely programmable via the software.

From production 2015, the modules will be available with the following parameterisable functions:

  • Status of the output relays after Power ON
  • Definition of inputs as currentless OFF or ON
  • Definition of the functions of the BUS inputs
  • Definition of the functions in the operating modes: BUS, BUS failure and emergency operation
  • Safety functions for motor controls (limit switch settings, interlocks, activation times definable, switch-on times)
  • Specification of defined pulse times on the relays
  • Definition of the display LEDs on the module (display of inputs or outputs, BUS error, operating mode, running light)

Electrical Data

Operating voltage 12V to 35V DC or 12V to 27V AC
Current consumption 12V DC = 180mA, 24V DC = 80mA, 35V DC = 55mA
12V AC = 105mA, 24V AC = 70mA, 27V AC = 65mA (all relays are energized)
Inputs 8x 12-48V AC/DC, input current per input 5mA at 24V
Outputs 8x max. 48V AC or 30V DC / 1A each output
Subnet (RS-485) max. 5.6V limitation by Z-diodes
Connection screw terminals 1.5mm², inputs and BUS pluggable, BUS connector
Operating temperature -10°C to +50°C
Storage temperature -25°C to +70°C
Humidity 0...85 % r.h. non-condensing
Degree of protection in not installed state IP30

Design, Dimensions, Weight

Design DIN rail-mounting plastic housing light grey, snap-on on 35mm DIN rail 4 HP
Dimensions WxHxD 71x90x59mm
Weight 179g

Ordering Data and Conformity

Type designation I/O-08B-24V
Article no. 80021000
Conformity CE

DIP switch

8-pole DIP switch for setting the ISYGLT BUS address (0-127) is located under the cover of the module.

Special function DIP switch 1

DIP-1 Setting
OFFBUS operation
ONEmergency operation

Function Indicators (LEDs on the Module)

redPOWEROffNo operating voltage
OnOperating voltage, no error
yellowBUSOff / OnError BUS
blinkingInterference-free data transmission via the BUS line
8x greenA1-A8OffOutput inactive
OnOutput active

Pin Assignment

10-pole plug top

E1 Input 1
E2 Input 2
E3 Input 3
E4 Input 4
C.1 Common for E1-E4
E5 Input 5
E6 Input 6
E7 Input 7
E8 Input 8
C.2 Common for E5-E8

2x P-COM ports

P-COM Subnet and operating voltage

16-pole plug below

A1 Output 1
A2 Output 2
C.3 Common for A1/A2
A3 Output 3
A4 Output 4
C.4 Common for A3/A4
A5 Output 5
A6 Output 6
C.5 Common for A5/A6
A7 Output 7
A8 Output 8
C.6 Common for A7/A8
Ub Operating voltage
0V Operating voltage
A Subnet (BUS A, RS-485)
B Subnet (BUS B, RS-485)


Article no.: 80021000

I/O module with 8 binary inputs and 8 relay outputs. For control tasks that only require low voltages.
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