Ex p control unit
Motor purge controller
Electrical connections
Rev. 0
01-37A2-7D0003_Operating instructions_MPC_20210923_0_en.docx
Page 31 of 96
6.1
General
Connection information
DANGER
DEATH OR SERIOUS PERSONAL INJURY DUE TO OPENING THE COVER OF
THE APEX CONTROL UNIT IN AN EXPLOSIVE ATMOSPHERE.
Risk of explosion.
Before opening the housing cover, check the atmosphere for any
explosive gases.
ATTENTION
SHORT CIRCUITS THROUGH LOOSE OR PROJECTING CABLES IN THE APEX
CONTROL UNIT.
The APEX control could be damaged.
Connect all core cables, including those not required, to the terminal.
Lay cables only in the space between the shield bus and the
connection terminal.
Check that no cables are loose or protrude.
AVOID DAMAGE TO THE SEAL.
Cancellation of the Ex protection concept.
Visual inspection of the seal when closing the APEX control unit
(cleanliness, fit and intactness).
AVOID SWITCHING OFF AND TURNING ON THE POWER SUPPLY QUICKLY.
Internal protective circuits can trip
Wait approx. 30 seconds between switching off and on again.
Recommendation for securing active parts
The Ex e terminals should be protected against contact by a
protective cover.
The following describes the procedure for attaching connecting cables to the Ex
p control unit:
Procedure:
Establish the electrical connections as per the terminal assignment. The
clamps are designed using tension spring technology. A suitable tool
must be used for this.
