Ex p Control unit
APEX
mv
Electrical connections
Rev. 0
01-37A2-7D0005_MV_Manual_Exp-Control-Unit_2021005_0_en.docx
Page 35 of 80
6.2.1.4
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
6.2.1.5
Terminal row “X7”
ATTENTION
MATERIAL DAMAGE DUE TO INCORRECT PRE-FUSING.
Valve or Ex p control unit may be damaged.
Use only original spare parts.
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