Installing the inverter
Page 27
Operating Instructions for Powador 7700-9600_EN
EN
Authorised electrician
3. Option ( for example, for retrofitting to an existing system)
The maximum length of the CAN (twisted pair) without RS485 conductors with RS485 connection for every group of
three is 500 m (total length of the inverter chain max. 1200 m)
Group of 3
CAN (Twisted Pair) without RS485 conductor
Group of 3
Group of 3
NOTE
* The terminator must be activated via the DIP switch in the unit.
** Cables must be appropriately fuse-protected.
Connecting CAN bus
1. Unscrew the cable fitting.
2. Thread the connection cables through the cable fitting.
3. Connect the connection cable to the corresponding connection terminals.
4. Connect as follows to all inverters
•
CAN H with CAN H and
•
CAN L with CAN L and
•
GND with GND (see Figure 21 on page 25)
5. Tighten the cable fitting.
6. For correct signal transmission, the first and last devices in the group of three
must have the "Term CAN" terminating switch set to ON.
The terminating switch "Term CAN" must be set to OFF on the middle inverter.
7. This termination does not depend on the manner of cabling that is used. The switch is found on the
board next to the terminal block. (See Figure 17 on page 23)
8. All inverters of a group must be assigned a unique SYM bus address within the range of 1 to 32.
9. Enter feed-in phase for every inverter into which the inverter feeds. The red LED flashes until a feed-in phase
or SYM bus address has been entered. (See Section 9.5 on page 45)
10. If necessary, the maximum permitted asymmetry must still be entered so that symmetrisation can take place
properly. In some countries (DE, IT) this value is preconfigured in accordance with the applicable directive and
does not normally need to be changed. (Table 4 on page 19)
RS485
RS485
RS485
PR
OL
OG
RS485
RS485
RS485
RS485
RS485
RS485
R
a*
R
a*
R
a*
R
a*
R
a*
R
a*
R
RS485
N
L2
L1
WR 1
WR 2
WR 3
WR 4
WR 5
WR 6
WR 28
WR 29
WR 30
L3
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