System 8700 User Manual
Rev 0.95
Page 9 of 32
Electrical Installation
2.4.1.
Connection of Power
The PLC is powered by 24 V DC, please see Figure 1.
2.4.2.
Connection of Remote Control Cable
The power supply can be remote controlled via an Ethernet connection. The connection is made
directly on the rear of the IPC. Seen from behind, open the right-hand door and make the
connection to the rightmost of the two RJ45 connectors.
Figure 1: Connections to the PLC
Instructions for remote line setup and use are given in chapter 4.
2.4.3.
Connection of External Interlocks
Interlocks, externals as well as internals, are connected to the control system PLC through 24V
relays. Both PLC and the relays can shut down the power supply in case of an interlock. This
offers two undependable ways of shutting down.
Interlock inputs are designed for external potential free contacts. The open circuit
voltage is <30V and the closed-circuit current is <20mA.
See power supply manual and
drawings for details.
Remote
Ethernet
connection
to IPC
EtherCAT
connection,
used by internal
I/O modules
Power