Operating instructions

Table Of Contents

Protect PV.600/800 OD Series - Operating Instructions

Page 62 of 100 8000041160 BAL

• Route the shield on a shield busbar directly from the point at

which the line enters the cabinet. Route the shield up to the

assembly, but ensure that it does not make contact there.

When used in PV applications, the shield of the RS-485 bus line

should only be earthed on one side so that no equalizing or inter-

ference currents can flow through the shielding. If several bus sta-

tions are present, you must make sure that the shield is never in-

terrupted.

Always attach the shield of the RS-485 bus line to earth on the

quiescent side. This means that only one side of the shield is at-

tached to the earth potential on the Modbus master or data logger

side.

In the Protect PV, the shield must not be connected to the housing

in any way.

Insert the RS-485 bus line into the equipment until it reaches the

MCC Multicom interface, shorten it accordingly, and attach both

wires to terminals "A" and "B" (if you are using a bus cable con-

nector) or pins 3 and 8 of the 9-pin D-Sub connector.

Use a shielded CAN bus line, e.g. 2 x 0.22 twisted pair Lapp

"UNITRONIC-BUS LD".

If you are using the PV.LoG or Skylog data logger and preassem-

bled data lines from AEG PS, plug the bus connector into X5 on

the MCC assembly and route the line to the data logger cabinet.

Shorten the line as appropriate and connect the wires to the corre-

sponding terminals. The shield must be connected to the shield

terminal block at the intended position in the data logger cabinet.

 Observe the information in the PV.LoG/Skylog manual.

7.7 MCC MultiCom Interface

Modbus Configuration

Figure 17 - MCC MultiCom interface (-A29.1) as Modbus interface (top view)

LED

RS232:

RS485:

B A B A