Growatt WIT 50-100K-US - Rapid Shutdown Device (RSD)

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3. After the cable connection, reinstall the dustproof cover. The position of the DRMS port is
shown in Fig 6.15 below.
Fig 6.15 DRMS port
Table 6.9 Demand Response Modes (DRMs)
Mode
Socket asserted by
shorting pins
Requirement
DRM0
5, 6
Operate the disconnection device
DRM1
1, 6
Do not consume power
DRM2
2, 6
Do not consume at more than 50% of rated power
DRM3
3, 6
Do not consume at more than 75% of rated power AND Source reactive
power if capable
DRM4
4, 6
Increase power consumption (subject to constraints from other active DRMs)
DRM5
1, 5
Do not generate power
DRM6
2, 5
Do not generate at more than 50% of rated power
DRM7
3, 5
Do not generate at more than 75% of rated power AND Sink reactive power
if capable
DRM8
4, 5
Increase power generation (subject to constraints from other active DRMs)
6.5.6 Rapid Shutdown Device (RSD)
The Rapid Shutdown Device (RSD) is used to shut down the WIT 50-100K-US system and stop
the PV side from supplying power to the inverter. The RSD is a normally closed (NC) contact.
Once the RSD button is pushed, the inverter will be disconnected from the PV side and shut down.