Kaco blueplanet 92.0 TL3 US Manual page 35

Manual
1 2
A B A B A B A B A B
GND GND GND GND
Fig. 37: RS485 interface wiring diagram
1 Inverter, terminal unit
2 Inverter
3 Data monitoring unit
Properties of the RS485 data line
Maximum length of the RS485 bus line
Maximum number of connected bus devices
Data cable
Recommendation
Compatibility list of RS485 smart meter
↻ To prevent interference during data transmission:
- Observe the wire pairing when connecting DATA+ and DATA-.
Do not lay RS485 bus lines in the vicinity of live DC/AC cables.
1. Loosen the cable fitting [ W_20]
2. Thread the connection cables through the cable fitting.
3. To place the shield, strip the RS485 data cable at the position of the shield
clamp up to the wire mesh (approx. 20mm).
4. Connect the connection cables to the corresponding connection terminals.
5. The following must be connected to all inverters and to the data monitor unit in
the same way:
- Wire A (-) to wire A (-) and wire B (+) to wire B (+)
- GND to GND
6. Tighten cable fittings [ W_20 /
NOTE
When using the RS485 bus system, assign a unique address to every bus device (inverter, sensor) and terminate
the terminal units (see the "Settings" menu) .
↻ Check whether one of the devices represents the terminal unit.
F Only activate the terminating resistor on the communication circuit board of the terminal unit using the DIP switch.
ð RS485 connection made. Lay signal cable correctly.
7.9.5 Connecting the fault signal relay
The contact is designed as an N/O contact and is labeled "ERR" or "Relay" on the circuit board.
Maximum contact load
DC 30 V/1A
KACO blueplanet 92.0 TL3 US KACO blueplanet 110 TL3 US KACO blueplanet 125 TL3 US
4
2 3
5
A B
GND GND
13,27 In-Ibs ].
Installation | 7
4 Communication
5 Power supply
Max. 3940 ft
This length can be reached only under optimum conditions.
Cable lengths exceeding 1640 ft generally require a re-
peater or a hub.
99 devices + 1 data monitor device or max. 49 devices and
49 string combiners + 1 data monitor device
Twisted, shielded.
Black twisted pair for laying cable outside and in the
ground, (2x2) max. 20 AWG
Gray twisted pair for dry and damp indoor spaces, (2x2)
max. 20 AWG
Fig. 38: Assignment of twisted-pair
wires
Page 35