ABB MegaFlex 1000 UL S1 Installation Manual page 43

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UPS 1
Control bus cables routing
Place and fix the cables J1A – J2A (1/2/3/4/5) and J1B – J2B (1/2/3/4/5) inside the UPS cabinets in the position
illustrated in the drawing Fig. 4.10.3-3.
Note!
Pay attention when cabling and routing the communication bus cables J1A – J2A (1/2/3/4/5) and
J1B – J2B (1/2/3/4/5) inside the UPS cabinet.
In case one unit must be removed from the Parallel System, the communication bus cables must be
taken out the UPS cabinet without disconnecting them from the two boards "P13/P14 – IM0222
–Bus Interface Board".
For reliability reasons, the cables J1A – J2A (1/2/3/4/5) and J1B – J2B (1/2/3/4/5) connecting the units should
be run in separated protected conduits (as indicated in Fig. 4.10.3-3) separated from the power cables.
It is important that the cable J1A – J2A (1/2/3/4/5) must be the same length as cable J1B – J2B (1/2/3/4/5).
Warning!
Connection and commissioning of an additional UPS to an existing Parallel System must be
performed only by an ABB Service Technician.
J1B/1
J1A/1
UPS 1
J1B/1
J1
B
J2
J1
A
J2
J1A/1
Fig. 4.10.3-3 MegaFlex 1000 to 1600 - Control Bus cable routing and connection
MegaFlex 1000 to 1600
UPS 2
UPS 2/3/4/5
J1B/2÷5
J1A/1
J1B/1
J1A/2÷5
UPS Installation Guide / REV-A
J1B/2÷5
J1A/2÷5
J1
B
J2
J1
A
J2
UPS
3, 4, 5, 6