User's Manual

G7 EXOTECHNICAL USER MANUAL || 29
10.3 A/B INTERFACE PORTS
When safety notications are triggered on EXO, A/B interface ports act
as switches by sending ON or OFF signals to connected accessories.
Ask your Blackline Safety distributor or sales representative for a list of
Blackline G7 EXO accessories that attach to the A/B interface ports.
If a high gas threshold is reached, port A will turn ON. Any device
connected to port A will be active. The port will turn OFF when gas
levels go back to normal on EXO.
If a low gas threshold is reached, port B will turn ON. Any device
connected to port B will be active. The port will turn OFF when gas
levels go back to normal on EXO.
Cable requirements
Both of EXO’s A/B interface ports are tted with a female M12 4 pin
receptacle. Electrical cables with a male M12 4 pin plug are required to
connect to these ports.
INSTALLING ACCESSORIES
Install EXO interface port accessories as shown in the following
electrical diagrams to ensure intrinsic safety.
Diagram 10.3.3
Interface port parameters – Low-side switch
Diagram 10.3.1
Interface port schematic diagram
Female receptacle
Pin assignment M12 socket, 4-pos.,
A-coded, view receptacle side
3 4
1
2
Input entity parameters (low side switch)
Terminal Ui Ii Pi Ci Li
Pin 1 to pin 2 (GND) 24Vdc 3.33A 1.25W 0F 0H
≤
≤
≤
≥
≥
Diagram 10.3.2
Interface port circuit diagram
Contact assignment of the M12
plug and M12 receptacles
LOW-SIDE SWITCH
1 - BN
2 - WH
3 - BU
4 - BK
GND
HI-VOLTAGE OUT
LOW-VOLTAGE OUT
Vmax (or Ui)
Imax (or Ii)
Pi
Ci
Li
EXO Interface Ports
Voc (or Uo)
Isc (or Io)
Po
Co
Lo
Vmax (or Ui)
Imax (or Ii)
Pi
Ci + Ccable
Li + Lcable
Associated Apparatus
with Entity Parameters
See table below for values