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EN / SunMaster CS15TL RP / CS20TL RP / CS30TL RP
Figure 7-4
7.4 RS485 CONNECTORS
The two connectors in the centre of the connection blockare
RS485 connectors. They can be used for connecting up to 20
CS inverters. They also connect your inverter to an optional
Datalogger. We recommend not to make a ringnetwork or
T-connections in your RS485 network. The maximum network
length is 1000m.
Connections between the devices are made by standard
straight UTP cables. Mastervolt can supply these cables.
These cables are also commonly available at computer
supply stores.
Figure 7-5
7.5 REMOTE MONITORING WITH RS485
Mastervolt provides several monitoring solutions like PC
software, dataloggers, remote monitoring and so on.
Consult www.mastervoltsolar.com for a comprehensive
overview of all possibilities.
Figure 7-6: RS485 connections
7.6 PLANT TOTALS
RS 485 connection of the inverters also enables display
of the plant totals. These are the power totals, calculated
by adding the individual powers of all connected inverters.
Refer to section 8.5.1.
7.7 ALARM CONTACTS
See figure 7-7, left part. The three alarm contacts (maximum
load 30V/1A) are Common (Com), Normally Open (NO) and
Normally Closed NC), see figure 7-7. Refer to section 8.9.5
for alarm contact settings.
Figure 7-7: Alarm contacts schematic example
Max 30V/1A
ALARM
CONTACT
+
_
NO
NC
COM
!
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