The following table describes how we can connect EASTRON meter (SDM120CT(40mA)
to inverter:
Meter Pin NO.
Description
Meter Connection
1
CT-input
CT-P(White)
2
CT-N(Black or Blue)
3
N-in
Grid N
4
L-in
Grid L
9
RS485B
COM Port RS485B2
10
RS485A
COM Port RS485A2
Active power control with a ripple control signal receiver.
Monitor
Router
Internet
PC
Radio ripple
control receiver
Public Grid
Fig 6.20
6.8 Inverter demand response modes (DRMS)
This series inverter has the function of demand response modes, We use 8Pin socket as
inverter DRMS connection.
DRMS application description
Ø
Ø
Only applicable to AS/NZS4777.2.
DRM0, DRM5, DRM6, DRM7, DRM8 are available.
Damage to the inverter due to moisture and dust penetration
Ø
Ø
Make sure the cable gland has been tightened firmly.
If the cable gland are not mounted properly, the inverter can be
destroyed due to moisture and dust penetration. All the warranty
claim will be invalid.
Information
CAUTION
6.8.1 16Pin socket pin assignment
COM Socket Pin
No.
Assignment for inverters capable of
discharging
both charging and
9
10
11
12
13
14
DRM 5
DRM 6
DRM 7
DRM 8
RefGen
Com/DRM0
6.8.2 Method of asserting demand response modes
Mode
DRM 0
DRM 5
DRM 6
DRM 7
DRM 8
Requirement
14
9
10
11
12
13
13
13
13
13
Operate the disconnection device
Do not generate power
Do not generate at more than 50% of rated power
Do not generate at more than 75% of rated power AND
Sink reactive power if capabie
Increase power generation (subject to constraints from
other active DRMs)
Socket Asserted
by shorting pins
6.8.3 Using DRMS for EU
Excessive voltage can damage the inverter!
External voltage of DRMs PORT don't over +5V.
WARNING
WARNING
6.8.3.1 The following table describes the socket pin assignment and function:
COM Socket Pin NO.
Description
Connect to RRCR
9
10
11
12
13
14
Not connected
Relay contact 2 input
Relay contact 3 input
GND
Relay contact 1 input
Not connected
K2 – Relay 2 output
K3 – Relay 3 output
K4 – Relay 4 output
Relays common node
K1 – Relay 1 output
Relay contact 4 input
27
28
