Communication connection for KOSTAL Smart Energy Meter via RS485
1 | Inverter |
2 | RS485 interface for inverter |
3 | RS485 interface for KOSTAL Smart Energy Meter |
4 | KOSTAL Smart Energy Meter |
5 | Feed meter |
6 | Public grid |
7 | Read the operating manual for the KOSTAL Smart Energy Meter |
8 | Set RS485 termination in KOSTAL PIKO CI app to ON |
9 | Use a current transformer for currents above 63 A. Read the operating manual for the KOSTAL Smart Energy Meter |
Connecting the KOSTAL Smart Energy Meter
- De-energise the mains cable.
DANGER
Risk of death due to electrical shock and discharge!
De-energise all devices and secure them against being switched on again.
- Install the KOSTAL Smart Energy Meter as shown in the illustrations at the grid connection point in the house grid.
- Correctly route the communication cable from the inverter to the control cabinet and connect to the KOSTAL Smart Energy Meter following the manufacturer's wiring diagram.
INFO
Requirements of communication cable:
- wire cross-section from 0.34 to 1.5 mm² (rigid) or 0.34 to 1.0 mm² (flexible)
- bus length max. 1000
- length of stripped insulation approx. 7.5 mm
- De-energise the inverter. Switching off the inverter
- Guide the RS485 cable through the communication plug and seal provided.
- Fit RS485 cable on inverter plug.
- Assemble plug and tighten union nut to the prescribed tightening torque.
Tightening torque: 3 Nm. - Connecting plug to interface in COM5 connection panel
- Establish a LAN connection from the KOSTAL Smart Energy Meter and the inverter to the Internet.
- In this variant, the KOSTAL Smart Energy Meter works as a slave and sends data to the inverter.
- In the KOSTAL Smart Energy Meter, select the KOSTAL PIKO CI Conf Tool for the RS485 A interface. Please refer to the operating manual of the KOSTAL Smart Energy Meter.
After commissioning
INFO
After commissioning, the settings for the RS485 connection still have to be configured in the app.
This includes, for example, setting the transmission speed.
- The usage and installation position of the KOSTAL Smart Energy Meter (KSEM) has to be set in the KOSTAL PIKO CI Conf Tool app on the master inverter.
This can be set under Settings > Inverter settings > Power adaptation/controls > Energy management > External sensor > KSEM and
Settings > Inverter settings > Power adaptation/controls > Energy management> Sensor position > On grid (default value). - A power limitation of the grid feed-in (e.g. to 70%) must be entered in watts on the Master inverter.
This can be set under Settings > Inverter settings > Power adaptation/controls > Energy management > Limitation of the active power to [W]. INFO
If power limitation is carried out in combination with the KOSTAL Smart Energy Meter, power limitation via a ripple control receiver (RCR) is not possible and must be deactivated.
- The inverter to which the KOSTAL Smart Energy Meter has been connected must be configured as the master.
This can be selected under Settings > Communication settings > Master/Slave settings > Master RS485. - On the master inverter, which is connected to the RS485 communication cable, set RS485 termination in the KOSTAL PIKO CI Conf Tool app to ON.
This can be done under Settings > Communication settings > RS485 settings > Terminal resistor. - All other inverters connected to the master inverter via LAN must be configured as slave. The following default settings should be checked for all slave inverters:
Master/slave settings: Slave
External sensor: deactivated
Sensor position: Grid connection point
Ripple Control Receiver Enable: OFF
- Inverter connected to the KOSTAL Smart Energy Meter .