enphase COMMS-KIT-INT-02 Quick Install Manual page 2

2
Wiring the Communications Kit 2 INT
Strip cable insulation as per the following image. Keep the terminating
resistor only on the devices which are on either end of the control com-
munication bus and remove the resistor from all other devices.
Drain wire
Cable shield
70 mm
The tested and supported control cable make and models is:
LAPP UNITRONIC RE-2Y(ST)Yv.
✓
NOTE: Use a wire stripper to strip the jacket of control communication
cable.
• To ensure proper control (CTRL) cable connection with IQ Batteries
follow the guidelines outlined below while connecting the cable to the
headers.
WARNING! Failure to follow wiring guidance will result in the
system being unable to detect devices leading to commission-
ing and operation failures.
CT R L H E A DE R NU M BE RS
Screw terminal 1
Screw terminal 2
Screw terminal 3
Screw terminal 4
CTRL (L)
CTRL (H)
Not used
CTRL (G)
8 mm
120 mm
CT R L SI GN A LS
CTRL L
CTRL H
CTRL G
Not used
CTRL header
• Ensure that both ends of the CTRL cable twisted pair conductors are
inserted into the header as shown above.
• Connect drain wire to the drain terminal only at one end of a CTRL cable.
Do not connect drain wires at both ends of a CTRL cable. Please follow
guidance based on section 3
components.
✓
NOTE: To avoid mis-wiring, note the conductor colour as well as the
number on the conductor cores. The figure alongside and the table below
show the mapping of terminals on the header to the conductor colour and
number on wire core.
Twisted pair 1 – Black – CTRL (L)
Twisted pair 1 – White – CTRL (H)
1 1 2 2
Twisted pair 2 – Black – CTRL (G)
Twisted pair 2 – White - Not used
LAPP cable
TIP: Before pulling the cable through any conduit perform continuity checks
and label each end of all the conductors with small coloured clips or stickers
(with the same numbering as the headers). This will enable easy identification
of conductors and avoid mis-wiring.
The following table below provides mapping of the header numbers, control
communication signals, and twisted pair wire designation for the recom-
mended LAPP cables:
L A P P WI R E D ES I G NAT I O N
Twisted pair 1 – Black
Twisted pair 1 – White
Twisted pair 2 – Black
Twisted pair 2 – White (not used)
Screw terminal for control
cable (torque 0.2 N m)
Drain terminal
Drain wire
Control (CTRL) wiring between system