Bartec APEX px, Operating Instructions Manual

Page: 46 / 98

Ex p Control unit
APEX px
Electrical connections
Rev. 0 01-37A2-7D0001_px_Manual_Exp-Control-Unit_20210923_0_en.docx Page 45 of 96
Terminal row “X12”
Floating signaling K2 can be classified as pure enable according
to SIL when used.
A floating signal (4x NO) is available on
the Ex p control unit. This signal can
either be used as an enable that is also
safety related.
Or it can be used as a floating signal.
Terminal Connection Function
1 K2_1 - NO Normally open contact
2 K2_2 – NO
Normally open contact
3 K2_3 – NO Normally open contact
4 K2_4 – NO Normally open contact
5 K2_1´ - NO
Normally open contact
6 K2_2´ - NO
Normally open contact
7 K2_3´ - NO
Normally open contact
8 K2_4´ - NO Normally open contact
Terminal row “X7”
ATTENTION
MATERIAL DAMAGE DUE TO INCORRECT PRE-FUSING.
Valve or Ex p control unit may be damaged.

Operate the digital purge gas valve only with a 1.0 A pre-fuse and the
proportional purge gas valve only with a 1.6 A pre-fuse.
The terminal row X7 is used to connect
the purge gas valve and the
accompanying valve fuse. Furthermore,
the terminal points 6 – 9 are intended for
unused wires of the LAN connection
cable.
Terminal Connection Function
1 Pre-fuse Connection pre-fuse valve
2 Pre-fuse Connection pre-fuse valve
3 Valve + + conductor valve
4 Valve - GND valve
5 Valve - PE PE valve
6 L1 BU
For unused LAN cable wire
7 L2 BUWH
For unused LAN cable wire
8 L3 BNWH
For unused LAN cable wire
9 L4 BN
For unused LAN cable wire