3.8 Digital Input / DRM & EPO Functions
Communication Module has 1 set of emergency power off function (EPO).
When the VCC and INV OFF pins are short-circuited, inverter will shut down
immediately. The module also provides 6 sets of digital input function (K1~K6).
Please refer to
Table 3-3
for the digital input definition. The suitable wire size
is 30-16 AWG.
In Australia and New Zealand, the Demand Response Modes (DRMs) are also
use digital input function to assert. The definition is different from normal digital
input function; please refer to
Table 3-4
for the DRMs pin definitions.
Table 3-4 : Definition of digital input & EPO functions
Inverter’s action
Emergency power off (EPO)
0% active power
Maximum 30% active power
Maximum 60% active power
Maximum 100% active power
Reserved
Reserved
Short
VCC & INV OFF
VCC & K1
VCC & K2
VCC & K3
VCC & K4
VCC & K5
VCC & K6
Table 3-5 : Definition of digital input & EPO functions
Inverter’s action
DRM 0 (Disconnect from grid)
Charge/Discharge mode
Charge mode
Discharge mode
DRM 1 (0%)
DRM 2 (50%)
DRM 3 (75%)
DRM 4 (100%)
DRM 5 (0%)
DRM 6 (50%)
DRM 7 (75%)
DRM 8 (100%)
Short
VCC & INV OFF
VCC & K1
VCC & K2
VCC & K3
VCC & K4
VCC & K1 & K5
VCC & K2 & K5
VCC & K3 & K5
VCC & K4 & K5
32
Installation