ABB AC 800M Manual

Section 2 Installation Installing the ModuleBus for PM8xx
3BSE036351-510 A 131
Installing the ModuleBus for PM8xx
The ModuleBus has an electrical and a fiber optical interface that are logically the
same buses. A maximum of 12 I/O units can be connected to the Electrical
ModuleBus and up to seven clusters to the fiber optical ModuleBus. The fiber
optical interface is intended for local distribution of I/O clusters and for connection
of engineered and standard drives.
Figure 40 on page 131 provides details of the fiber optic connectors, together with
the PM8xx optical ModuleBus ports.
This topic does not apply to PM891. See Installing the ModuleBus for PM891 on
page 132.
Figure 40. PM8xx Connectors for Optical ModuleBus
PM860
CN1 CN2
COM3 COM4
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Rx
L+
L–
SA
SB
Rx
Tx
Duplex Fiber Optic Cable Connector
Simplex Fiber Optic Cable Connector

ABB AC 800M Specifications

General

Brand	ABB
Model	AC 800M
Category	Controller
Language	English