enphase IQ System Controller 2 User Manual

23
IQ System Controller 2 Quick Install Guide
Aux wiring: Generator control
Section C - Wiring
Generator
2 Wire
Signal
240 V Line
120 V for
generator
battery
charger
Backup
Panel
Generator
2 Wire Signal
240 V Line
120 V for generator
battery charger
240 V
line for
Utility
Sense
120 V
for
power
12 VDC
Power Source
Utility
Sense
Backup
Panel
An auto-start generator can be integrated with the Enphase Energy
System without the need for any external automatic transfer switch
(ATS).
To view the full list of supported generators and more details see,
Generator Integration Tech Brief.
• For 2-wire autostart generators, wire the
generator I/O port in IQ System Controller 2
to the 2-wire remote start terminals of the
generator.
• For utility sense generators, wire the input of
a 12 V DC power supply to the backup loads
panel.
• Wire one end of the DC power supply
output to one of the terminals of the
generator auxiliary contact (NO3) on the
IQ System Controller 2.
• Wire the other terminal of the generator
auxiliary contact (NO3) to the coil of an
external Normally Closed (NC) power relay.
• Wire the other end of the DC power supply
output to the other end of the coil of the
Normally Closed (NC) power relay.
• Wire one terminal of the external Normally
Closed (NC) power relay to one of the poles
of a double pole breaker on the backup
loads panel.
• Wire the other terminal of the external
Normally Closed (NC) power relay to one of
the utility sense terminals on the generator
through a fuse.
• Wire the 2
nd
pole of the double pole breaker
on the backup loads panel to the 2
nd
utility
sense terminal on the generator via a fuse.
NOTE: Control lines to headers support 28 AWG and
16 AWG wire gauges.
Refer to the technical brief and user guides for
detailed instructions on generator integration, see
the Generator Support page at https://enphase.
com/installers/storage/generator. Always follow
generator installation and operation instructions
from the generator manufacturer.
1. Install generator CTs (CT-200-SPLIT) for L1 and L2 at the
IQ System Controller 2 generator input terminal for power
monitoring when the generator is running.
2. Use the Enphase Installer App to commission and program
IQ System Controller 2 to control the generator.

enphase IQ System Controller 2 Specifications

General

Brand	enphase
Model	IQ System Controller 2
Category	Controller
Language	English