ASSEMBLY INSTRUCTIONS
SINUS PENTA
MODULAR INVERTERS
24/
47
2.4.
Internal Wiring for Modular Inverters S74
The following connections are needed:
N. 2 power connections with copper bar 60*10mm between the inverter modules for DC supply.
N. 9 connections with 9-pole shielded cable for analog measures.
Type of cable: shielded cable
N. of wires: 9
Diameter of each wire: AWG20÷24 (0.6÷0.22mm
2
)
Connectors: 9-pole female SUB-D connectors
Connections inside the cable:
Connector
Female
SUB-D conn.
Female
SUB-D conn.
pin
1
→
1
pin
2
→
2
pin
3
→
3
pin
4
→
4
pin
5
→
5
pin
6
→
6
pin
7
→
7
pin
8
→
8
pin
9
→
9
Connections required:
- from control unit to splitter board in inverter module U1 (control signals, phase U)
- from control unit to splitter board in inverter module V1 (control signals, phase V)
- from control unit to splitter board in inverter module W1 (control signals, phase W)
- from splitter board in inverter module U1 to inverter leg U1 (control signals, phase U1)
- from splitter board in inverter module V1 to inverter leg V1 (control signals, phase V1)
- from splitter board in inverter module V1 to inverter leg W1 (control signals, phase W1)
- from splitter board in inverter module U1 to inverter leg U2 (control signals, phase U2)
- from splitter board in inverter module V1 to inverter leg V2 (control signals, phase V2)
- from splitter board in inverter module W1 to inverter leg W2 (control signals, phase W2)
N. 10 connections with unipolar, twisted pair cables type AWG17-18 (1mm
2
), for AC low voltage supply to the
electronic boards (N. 11 connections if an optional braking unit is connected).
Connections required:
- from auxiliary power supply unit 1 to the driver boards in each power leg 1 (from the power supply unit to
the driver board in inverter leg U1, from this driver board to the next in inverter leg V1, from this driver board
to the next in inverter leg W1) (+24V power supply to IGBT driver boards)
-
from driver board in inverter leg W1 to optional braking unit BU[*] (+24V power supply to braking unit)
-
from auxiliary power supply unit 2 to the driver boards in each power leg 2 (from the power supply unit to
the driver board in inverter leg U2, from this driver board to the next in inverter leg V2, from this driver
board to the next in inverter leg W2) (+24V power supply to IGBT driver board)
-
from auxiliary power supply unit 1 to splitter boards (+24V power supply to splitter boards) (from the power
supply unit to splitter board in inverter leg U1, from this splitter board to the next in inverter leg V1, from this
splitter board to the next in inverter leg W1)
- from splitter board in inverter module W1 to control unit (+24V power supply to control unit)
