AcuDC 200 Series
DC Power and Energy Meters
AcuDC 211
AcuDC 212
AcuDC 223
AcuDC 222
AcuDC 213
AcuDC 221
WESCHLER INSTRUMENTS
ISO9001 Certified
800-903-9870 440-378-6580 www.weschler.com info@weschler.com
AcuDC 200 Series DC Power Meter
INTRODUCTION
AcuDC 200 series DC power meter can be used for monitoring and
controlling in DC systems. These meters can measure a wide range of
parameters such as voltage, current, power and energy. There are digital
inputs for switch monitoring and relay outputs for remote controlling
as well as an over-range alarming feature for voltage and current. Large
signals, such as current and voltage can be converted to smaller signals
using AO output. All data in the meter is accessible via RS485 using open
Modbus RTU protocol.
APPLICATIONS
• Solar and wind nergy
energysystems
systems
• Industrial control systems
• DC energy management systems
• Large UPS systems
FEATURES
• DC power system metering
• Monitor and control power switches
• Alarming and analog output
• Standard DIN sizing (96×48mm) allows for easy panel installation
• Can be used in SCADA, PLC systems
• Large character LCD display with vivid blue backlight
• Wide operation temperature range
SPECIFICATIONS
Function
AcuDC 211 AcuDC 212 AcuDC 213 AcuDC 221 AcuDC 222 AcuDC 223
Voltage V (Volt)
Current I (Amp)
Metering
Power
P (W)
Energy E (kWh)
IO
DI



RO









4~20mA
AO

0~5V

Over /Under
Limit Alarm
Alarming
Communication
Display
RS485, Modbus
LCD
Dimensions
Note: 
Function
96×48×71mm

Option
Blank
NA
TYPICAL WIRING
Vdc+
Vdc+
Vdc-
Vdc-
Vdc+
8
5 V+
I-
8
Vdc+
Current Wiring 1
Vdc+
Vdc-
I+
AcuDC 200
I-
Load
Current and Voltage 1
14
AO
15
11
S3
AO+ AO-
S2
10
Resistor R
S4
12
Digital Input
Relay
AcuDC 200
S1
9
AC / DC
–+
13
19
DI1 DI2 DI3 DI4 DIC
18
NC
4
R21 R22
POWER
N
G
2
3
17
Current and Voltage 3
DIC
13
V-
Auxiliary power
Current and Voltage 2
DIGITAL INPUTS
DI2+ DI3+ DI4+
10
11
12
R12
8 I-
16
AcuDC 200
Load
L
1
Relay Output
7 I+
Hall 0~5V
Shunt 75mV
6 V-
AcuDC 200
Load
DI1+
9
8
AcuDC 221
Auxiliary power
R11
5 V+
8 I-
7
I+
Current Wiring 3
Current Wiring 2
6
V+
Vdc-
5 V+
7 I+
5
I-
Load
AcuDC 200
6 V-
7
I+
Load
Vdc-
AcuDC 200
Hall
Voltage Wiring
AcuDC 200
7
Load
8
0~5V
I+
Vdc+
Vdc-
I-
Shunt
7
6 V-
75mV
AcuDC 200
AcuDC 200
Vdc+
Vdc-
AO
AO+ AO14
15
VOLTAGE
V+
V5
6
R11
16
Relay Output (Voltage<250Vac
or 30Vdc I<3A )
RELAY OUTPUTS
R12
R11
R22
17
18
19
A
20
RS-485
B
21
16Vdc<Voltage<30Vdc
I<20mA
Analog Output
4-20mA, R<500Ω
S
22
CURRENT
I+
I7
8
Power
100~240Vac, 50/60Hz
100~300Vdc
2W
DIMENSIONS
44.00 (1.73 )
48.00 (1.89)
48.00 (1.89 )
Unit: mm (inches)
96.00 (3.78)
60.00 (2.36)
CUT-OUT
90.00 (3.54)
71.00 (2.80)
FRONT
SIDE
PANEL CUTOUT
TECHNICAL SPECIFICATIONS
Metering
Parameters
Accuracy
Resolution
Voltage
0.2%
0.01V
Current
0.2%
0.005A
Power
0.5%
0.01W
Energy
0.5%
0.1kWh
Drift with Temperature: <100ppm/˚C
Stability: 0.5‰/year
Analog Output (AO)
Range
0~600V
0.005~9999A
0.01~6,000,000W
0.1~99999.9kWh
Output Range
Resolution
Output Capability
Communication
Voltage
Input Range
Input Impedence
Load:
Accuracy
0~600V (1200V with optional Hall Element)
2MΩ
<0.2W
0.2%
Current
Input Range
Shunt
Hall Element
Power Consumption
Accuracy
0~10A (Direct input)
0~9999A (Extra current shunt or Hall
element, with programmable range)
50~100mV (programmable)
0~5V, 0~4V, 0~20mA, 4~20mA
2W (max)
0.2%
Digital Input (DI)
Optical Isolation
Input Form
Input Resistance
Input Voltage Range
Close Voltage
Max Input Current
4~20mA or 0~5V
12bit
4~20mA Max Resistance: 500Ω
0~5V Max Current: 20 mA
Type
Protocol
Baud Rate
Isolate Voltage
RS485, Half Duplex, Optical Isolated
Modbus RTU
1200~19200bps
2500Vac
Relay output (RO)
Output Form
Max Load Voltage
Max Load Current
On Resistance
Isolate Voltage
Mechanical Endurance
Power Supply
Input
Power Consumption
2500Vac rms
Contact with Power Supply
2KΩ (typical)
16~30Vdc
>16Vdc
20mA
Mechanical Contact, Form A
250Vac/30Vdc
3A
100MΩ (Max)
4000Vac
5×106 cycles
(P1) 100~240Vac, 50/60Hz 100~300Vdc
(P2) 20~60Vdc
2W
Operating Environment
Operation Temp
Storage Temp
Humidity
Altitude
-25˚C~+70˚C
-40˚C~+85˚C
5%~95% Non-condensing
2000m
ORDERING INFORMATION
Voltage
Current
Aux. Power Supply DI Option
RO Option
AO Option
AcuDC
0RO: No Relay Output
2RO: 2 Relay Output
0DI: No Digital Input
4DI: 4 Digital Input
0AO: No Analog Output
AO1: 4~20mA
AO2: 0~5V
P1: 100~240Vac, 50/60Hz 100~300Vdc
P2: 20~60Vdc
A0: Direct Current Input (0~10Amp)
A1: Current Shunt Input Option (50~100mV)
A2: Hall Element Input Option (0~20mA or 4~20mA)
A3: Hall Element Input Option (0~4V or 0~5V)
300V: 300Volts
600V: 600Volts
1000V: 1000 Volt External Hall Element (external 24VDC power supply required)
AcuDC 211
AcuDC 212
AcuDC 213
AcuDC 221
AcuDC 222
AcuDC 223
AcuDC Series Meter Ordering Example: AcuDC 223 - 600V - A0 - P1 - 4DI - 2RO - 1AO1
Distributor & Meter Modification Center:
Los Angeles-Toronto-Beijing
North America Toll Free: 1-877-721-8908
Web: www.accuenergy.com
Email: marketing@accuenergy.com
WESCHLER INSTRUMENTS
phone: 800-903-9870 440-378-6580
fax: 800-903-9590
440-238-0660
www.weschler.com info@weschler.com
Revision Date: Sep., 2011 Document # 1501E1121