DCE.230 DC Energy Meter
DCE.230 User Manual 1.7
1. Introduction
DCE.230 series DC energy meters are
designed for measuring and monitoring
in DC systems. The din rail DC energy
meters can measure of important DC
parameters: Voltage, current, power
and energy etc. It also support bi-
directional measurement with pulse
output. All data in the meter are
accessible via RS485 using Modbus RTU.
The meter has DC power supply. Input
voltage range up to 1000V DC, and
current inputs are flexible with DC shunt
and current sensors.
•
Measures kWh, W, V, A etc.
•
Bi-directional measurement
IMP & EXP
•
Pulse output
•
RS485 Modbus
•
Din rail mounting 35mm
•
DC shunt connection
•
Class 1
1.1 General Specifications
Voltage DC Input: 5~1000V DC
Auxiliary Supply: 9-40V DC
DC Shunt Input: 75mV
Current Range: 0~2000A
Power consumption: ≤ 2W / 5VA
AC voltage withstand: 4400V/ 1min
Impulse voltage withstand: 6.4kV -
1.2/50μS waveform
1.2 Unit Characteristics
The Unit can measure and display:
•
voltage
•
Currents
•
Power
•
Active energy imported and
exported
Pulse output indicates real-time energy
measurement. An RS485 output allows
remote monitoring from another
display or a computer.
1.3 Shunt Primary Current
The unit can be configured to operate
with primary current and secondary
input.
Primary current range: 0~2000A.
Second input: 75mV
1.4 RS485 Output for Modbus RTU
For Modbus RTU, the following RS485
communication parameters can be
configured from the Set-up menu:
Baud rate
1200,2400, 4800, 9600,19200
Parity
none (default)/odd/even
Stop bits
1 or 2
RS485 address
3-digit, 001 to 247
Modbus™ Word order
Hi/Lo byte order
is set automatically to normal or
reverse. It cannot be configured
from the set-up menu.
Set-up screens are provided for setting
up the RS485 port.
1.5 Pulse output
The unit provides a pulse output. The
constant can be configured to below:
Pulse output: 1, 10, 100, 1000 imp/kWh
(default)
Pulse duration: 60, 100 (default), 200mS
Pulse output indicate: Total kWh/
import kWh/ export kWh
Display: LCD with backlit
Max. Reading: 999999.9kWh
Weight: 220g
Standard: GB/T 33708-2017
10000 imp/kWh
1000 imp/kwh
100 imp/kWh
10 imp/kWh
1 imp/kWh
Pulse width: 200/100(default)/60 ms.
Note: the relationship between pulse
constant and CT1
CT1
Default pulse
imp/kWh
Settable pulse
imp/kWh
1–20
1000
1000,100,10,1
21–200
100
100,10,1
201–2000
10
10,1
*when the CT setting on meter is 2000A,
the default pulse constant is 10
imp/kWh and it can be set to
10imp/kWh or 1 imp/kWh.
*Over-current alarm: Alarm will
happened when the current is over the
CT1 value set on the meter. The Alarm
LED will stay solid and the corres-
ponding register value will be changed.
The user can read this register through
communication to determine whether
an overcurrent alarm has occurred.
The pulse outputs can be set to generate
pulses to represent Import kWh/ Export
kWh/ total kWh.
The pulse output is passive type,
complies with IEC62053-31 Class A.
1.7 Environment
Operating temperature -25 to + 55
℃
Reference temperature 23
℃±
2
℃
Relative humidity 0 to 90%, non-
condensing
Altitude up to 2000m
Installation category CATIII
Mechanical Environment M1
Electromagnetic environment E2
Degree of pollution 2
1.8 Mechanics
Din rail dimensions 36x100x63 (WxHxD)
DIN 43880
Mounting DIN rail 35mm
Ingress Protection IP51 (indoor)
Material Self-extinguishing UL94V-0
2. Operation
2.1 Initialization Display
When it is powered on, the meter will
initialize and do self-checking.
Full Screen (stay
2s)
Software Version
(stay 2s)
(This information
is for reference
only.)
Current Modbus
address
(stay 2s)
Current baud
rate (stay 2s)
Total active
energy(kWh)
Total=
Export
Max read:
999999.9 kWh
2.1 Buttons function
There are two buttons on the front
panel.
>
Scroll
the display for
data checking.
>Changing option at
Set-up mode
>Exit the Set-up mode
>
Set
-up mode entry
>Confirmation
2.1.1 Scroll display
After initialization and self-checking
program, the meter displays the
measured values. The default page is
total kWh. If the user wants to check
other information, please press the
scroll button on the front panel.
Total active
energy(kWh)
Total=
Export
Display format:
5+2 -> 6+1 -> 5+2
99999.99 ->
100000.0 ->
999999.9 ->
00000.00
Partial resettable
active
energy
Display format:
5+2 -> 6+1 -> 5+2
99999.99 ->
100000.0 ->
999999.9 ->
00000.00
Voltage
Current
Power
Display format:
<1000 W: XXX W
<1000kW: XXX.XXX
kW
For other value:
XXXX.XX kW
Pulse constant
CT1 Primary
current
Meter address
Baud rate
Parity
Software Version
Set-up Mode
To get into Set-up Mode, the user need
press the “Enter” button for 3 second.
1
Password
To get into Set-up mode,
it asks a password
confirm. Default
password: 1000
Use
Scroll
and
Set
to
enter correct password.
2
Keep pressing
Set
for 3
second, the current
selection
will flash, use
Scroll
and
Set
to change the
Modbus address.
Options: 1~247
Keep press
Set
for 3s to
confirm the selection.
3
Keep pressing
Set
for 3
second, the current
selection will flash, use
Scroll
and
Set
to change
the Baud rate. Options:
1.2k, 2.4k,4.8k,9.6k (
default ),19.2k
Keep press
Set
for 3s to
confirm the selection.
