Installation Manual

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6. RS-232 Command
13. Saving Interval <FUNC12>：When SD-series inverter enters power saving
mode, it will detect AC Load periodically.
Default = 2.0 Seconds
Setting range = 1.0S ~ 2.0S
If the AC Load is 3 times higher than Saving Level, inverter will recover and
output normally to AC Load.
14. Bypass Relay <FUNC13>：The setup is provided in one of the following two
ways.
On-line Mode or Off-line Mode ( Exacting, Normal, Haphazard).
Default = Normal (Off line).
Model
SETT <value>
Transfer Relay
Switching Feature
Haphazard
0
The transfer relay will switch “ON” or “OFF”.
Conformance to, phase and frequency
synchronization will not be considered.
Normal
1
The transfer relay will be “ON” if AC input (Grid)
power is available. The DC-AC inverter will remain
synchronized and Phase with the incoming AC power
(Grid). The relay will NOT switch off if the grid
frequency is beyond the range set under Sync
Frequency window.
Exacting
2
The transfer relay will switch “ON” or “OFF” based on
conformance to, the Phase and Sync Frequency.
On-line
3
Always supplied by battery until which has run down
(UVP) then switch to grid.
Table 40. Bypass Relay <FUNC13>
Figure 36. Frequency and phase synchronous