ABB AC 800M Manual page 95

Section 2 Installation
6.
Both CPUs should be powered from the same supply (single or redundant). For
redundant power supply, see
7.
Connection to the optical ModuleBus is identical to that for the processor unit
and for the FCI in S800 I/O
8.
3BSE036351-510 A
Installing the PM891 Processor Unit in Redundant Configuration
Provide connections for power supply and network:
a. Connect the power leads to screw terminals L+ and L- of both CPUs, and
the power supervision signals from SS8xx to screw terminals SA and SB.
b. Connect the Control Network cables to CN1 (single bus connection) or
CN1 + CN2 (redundant bus connection). The Control Network is
connected to both CPUs.
c. Connect the Control Builder to COM4 with cable TK212 of the Primary
CPU (if required for changing an IP address etc.). Otherwise connect the
Control Builder to the Control Network.
Connect the optical ModuleBus to the optical contacts on the processor units
(see Figure 2 on page 32 and
optical cable selection and cable length is provided in the S800 I/O
documentation.
Provide battery backup by connecting the CPUs to the external SB822 battery
units. Install them according to the instructions in
Rechargeable External Battery Unit
Figure 46 on page 140.
Figure 40 on page 131). Information regarding
(Figure 55 on page 161).
on page 144.
Installing the SB822
95