Generac Power Systems PV Link 010023, Руководство по установке

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Installation Manual for PV Link and SnapRS 23
Section 8 Troubleshooting
If the failure persists, contact the nearest Independent Authorized Service Dealer (IASD) or Gen -
erac Customer Service at 1-888-436-3722 (1-888-GENERAC), or visit www.generac.com for
assistance.
Table 8-1. PV Link Troubleshooting
Problem Cause Solution
Low Sun w/out SnapRS
PV Link does not have adequate input
voltage.
PV Links will show 'low sun' every night
when the sun goes down or if solar
panels are covered. Low sun when the
sun is shining indicates a problem w/
PV wiring. This is not a REbus wiring
issue.
• If few panels are installed and sub -
string voltage is lower than 135 V,
adjust Vin Startup value in mod. set -
tings.
• Check PV Link Settings
• Measure Substring Voltage
• Check PV Wiring
Low Sun w/ SnapRS
PV Link does not have adequate input
voltage.
PV Links will show 'low sun' every night
when the sun goes down or if solar
panels are covered. Low sun when the
sun is shining indicates a problem w/
PV wiring. This is not a REbus wiring
issue.
• Ensure PV Link was enabled w/
PVRSS.
• If few panels are installed and sub -
string voltage is lower than 135 V,
adjust Vin Startup value in mod. set -
tings
• Check PV Link Settings
• Measure Substring Voltage w/SnapRS
• Check PV Wiring
• SnapRS Health Check
No PV Link Device Comms • DC Disconnects are OFF for PV
Links.
• Polarity is incorrect for REbus (+/-)
between the PV Link and the
inverter.
• PV Link has a poor ground connec -
tion to the inverter.
• One or more REbus DC fuses are
blown at the inverter.
• Ensure DC Disconnect is ON.
• Check REbus Wiring Polarity.
• Check REbus Wiring Ground.
May Need to:
• Check REbus Fuses.
Known PV Link 'Offline' A PV Link that has communicated with
the inverter previously shows 'offline' at
its device page when it's connection to
the inverter has been disrupted by:
• Opening the PV Link DC Discon -
nect
• Changing the PLM Channel on the
PV Link so that it does not match
the inverter.
• compromising REbus wiring (+ / - /
ground)
• Ensure DC Disconnect is ON
• Check PV Link Settings
• Check REbus Wiring
May need to:
• Check REbus Fuses
PVRSS fail: high input
The voltage detected with SnapRS
devices installed is higher than
expected.
• Verify the SnapRS devices are
installed correctly.
• Run the PVRSS self-test.
• SnapRS devices have not been
installed or have failed.
PVRSS not configured
PVRSS is enabled on the PV Link, but
the SnapRSInstalld setting indicates no
SnapRS devices are installed.
Follow the instructions in the PVRSS
Commissioning with SnapRS Devices
section. See Commissioning with SnapRS
Devices for PVRSS
.
PVRSS count mismatch
The number of SnapRS devices listed
in the SnapRSInstalld does not match
the number of SnapRSDetected.
Check the Mod. Settings and update the
SnapRSInstalld value to reflect the num -
ber of installed SnapRS devices.
PVRSS fail: low input The panel output voltage is too low to
accurately count the SnapRS devices.
If the failure occurs with normal exposure
to sunlight, contact the nearest Indepen -
dent Authorized Service Dealer (IASD) or
Generac Customer Service at 1-888-436-
3722 (1-888-GENERAC), or visit
www.generac.com
for assistance.
(000659)
CAUTION
Equipment damage. Connect the PV Link output to a
REbus-compatible device (± 190 VDC nominal regulated
DC bus) only. Connecting to conventional PV inverters or
any other device could cause equipment damage.