Acrel AMC Series Owner's manual

527
Manual of AMC Series intelligent power collection
and monitoring device
Installation and Operation Instruction V3.0
ACREL Co., Ltd.

DECLARATION
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by
any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of Acrel. All
rights reserved.
This company reserve power of revision of product specification described in this manual, without notice.
Before ordering, please consult local agent for the latest specification of product.

CONTENTS
1.General....................................................................................................................................................................... 1
2.Type and specification of products............................................................................................................................ 1
3.Technical parameters................................................................................................................................................. 2
4.Installation wiring instructions.................................................................................................................................. 3
4.1 Outline and mounting cutout size....................................................................................................................... 3
4.2 Wiring method......................................................................................................................................................4
5.Operating instructions................................................................................................................................................7
5.1 Explanation for keypad functionality.................................................................................................................7
5.2 Display Example...................................................................................................................................................8
5.3 Programming menu........................................................................................................................................... 13
5.4 Programming example.......................................................................................................................................15
6.Communication........................................................................................................................................................19
6.1 Communication address table(MODBUS-RTU).............................................................................................19
6.2 Communication application.............................................................................................................................. 29
7.Common fault analysis............................................................................................................................................ 32

1
1.General
AMC series intelligent power collection and monitoring device is a smart meter designed for power
monitoring needs of power systems, industrial and mining enterprises, utilities, and intelligent buildings. It
integrates measurement of power parameters (such as single-phase or three-phase current, voltage, and active
power). Power, reactive power, apparent power, frequency, power factor) and power monitoring and assessment
management. At the same time, it has a variety of peripheral interface functions for users to choose: with RS485
communication interface, MODBUS-RTU protocol can meet the needs of communication network management;
4-20mA analog output can correspond to measured electrical parameters, meet DCS Such interface requirements;
with switch input and relay output can realize the function of "remote signal" and "remote control" of circuit
breaker switch. High-brightness LED/LCD display interface, parameter setting and control through buttons, ideal
for real-time power monitoring systems. Can directly replace conventional power transmitters and measuring
instruments. As an intelligent, digital front-end acquisition component, the instrument has been widely used in
various control systems, SCADA systems and energy management systems.
2.Type and specification of products
Picture 1
Meter type
Basic function
Optional function
Co-selection
function
AMC72-E4/KC
AMC72L-E4/KC
Three phase voltage, Zero sequence voltage
Three phase current, Zero sequence current
Three phase active power, Total active power
Three phase reactive power, Total reactive power
Three phase apparent power, Total apparent power
Three phase Power factor, Total power factor
Frequency, Voltage phase angle, Voltage and
current imbalance,Forward and reverse power
Four quadrant energy metering,System time
display
1 channel RS485 interface / Modbus-RTU protocol
and the statute DLT645.
①2DI+2DO+1Ep(K)
②4DI+2DO(K)
③Event record (SOE)
④T2-31 th and total harmonics
measurement (H)
⑤2DI+2DO+1M(KM)
①③④
②③④
③④⑤
AMC96-E3/KC
AMC96L-E3/KC
①4DI+2DO+1Ep(K)
②2DI+2DO+1Ep(K)
③Event record (SOE)
④2-31th harmonic
measurement (H)
⑤2-channel analog output (M)
①③④
②③④⑤
AMC96-E4/KC
AMC96L-E4/KC
AMC72-E/KC
AMC72L-E/KC
single-phase voltage，single-phase current
active power, reactive power, apparent power
Power factor
Frequency
Four quadrant energy metering,System time
display
1 channel RS485 interface / Modbus-RTU protocol
and the statute DLT645.
①2DI+2DO+1Ep(K)
②4DI+2DO(K)
③Event record (SOE)
④Total harmonic
measurement (H)
⑤2DI+2DO+1M(KM)
①③④
②③④
③④⑤
Note:1.DI--Switching input, DO--Switching output, M--Analog output, SOE--Event recording, H--Harmonic
measurement, Ep--Electric energy pulse
2.When the digital tube is displayed, the harmonic data is not displayed, and the data is read only by
communication.
3.K is a required function，Choose from ①②
4.When Event record (SOE) is selected,Extreme value and maximum demand（D）are available at the same
time.
5. The II on the instrument nameplate, representing the second generation product, applies to this specification.

2
3. Technical parameters
Picture 2
Technical parameters
Value
Input
Connection
Single phase-2-wire, 3-phase-3-wire, 3-phase-4-wire
Frequency
45-65Hz
Voltage
Rating:
single-phase :AC 100V、400V
Three-phase: AC 3×57.7V/100V(100V)、3×220V/380V(400V)、
3×380V/660V(660V)(96 size only)
Note：72 profile not suitable for high voltage applications
Overload:1.2 fold rating {continuous) : 2 fold rating for 1 second
Power consumption:< 0.5VA
Current
Rating: AC IA、5A
Overload:1.2 fold rating(continuous);10fold rating for 1 second
Power consumption:< 0.5VA
Output
Electric energy
Output mode:open-collector photo-coupler pulse
Pulse constant: 10000imp/kWh(settable)，see wiring diagram for details；
Communication
RS485port, Modbus -RTU protocol,DLT645 protocol(versions 07 and 97)，
baud rate 1200 ~ 38400
Function
Switching input
Dry contact input, built-in power supply;
Switching output
Output mode: Relay normally open contact output
Contact capacity: AC 250V/3A、DC 30V/3A
Analog output
1-5V,4 - 20mA
Accuracy class
Frequency:0.05Hz,Current、Voltage:0.2 class,Reactive power:l .0class,Reactive
Electric energy:l .0class, active power:0.5class,active electric energy:
0.5class,2-31th harmonic measurement:±1%
Power supply
AC/DC 85-265V or DC24V（±20%）or DC48V(±20%)
power consumption≤10VA
Security
Power frequency
withstand voltage
Between Power supply//Switching Output// Current Input//voltage Input and
Transmitting// Communication //Pulse Output//switching input AC 2 kV 1min;
Between Power supply、switching output、Current Input、voltage Input AC 2 kV
1min;
Between Transmitting、Communication、Pulse Output、switching input AC 1kV 1
min;
Insulation
resistance
Input、Output end to machine enclosure >100MΩ
Environment
Temperature
work: -25°C~+65°C storage: -40°C ~+80°C
Humidity
≤93%RH Non-condensing
Altitude
≤2500m
Note: The instrument Modbus RTU is compatible with dlt645 and only needs to set the corresponding address.
See Chapter 6.3 for details.

3
3.Installation wiring instructions
4.1 Outline and mounting cutout size
Picture 3
Outline
faceplate size
housing size
cutout size
width
height
width
height
depth
width
height
72 square
75
75
66.5
66.5
94.3
67
67
96 square
96
96
86.5
86.5
77.8
88
88
Figure 1 AMC72 appearance size
Figure 2 AMC96 appearance size
Figure 3 AMC72 installation dimensions

4
Figure 4 AMC96 installation dimensions
4.2 Installation method
1)Opening in fixed distribution cabinet
2)Take out the instrument and take out the clip
3) The instrument is mounted from the Front to the mounting hole, as shown in figure 5
4) Insert the instrument clasp to secure the instrument, as shown in figure 6
Figure 5 Figure 6
4.3 Wiring method
According to varied design requirements, power and voltage input terminals are recommended with
fuse(BS88 1A gG) to meet with the safety performance requirements of prevailing electric codes.

5
4.3.1 Instrument terminal block and wiring method
1 2
L(+)N(-)
POWER
40 49 42
DO1 COM1DO2
Relay Outputs
30 31 39 32 33 21 22
DI1DI2 BAIO3 IO4
Switching Inputs Common RS485
11 14
Voltage input Current input
4 5
U1 UN I1* I1
three-phase single-phase
Figure 7 AMC72 series terminal block diagram
Note: Switching input: 32 - DI3, 33 - DI4;
pulse output: 32 - E +, 33 - E-.
Analog output：32-AO，33-COM3.
Figure 8 AMC96 series terminal block diagram
Note:
Switching input: 32——DI3, 33——DI4, 38——COM3;
pulse output: 32——AO1,33——AO2,38——COM3.

6
4.2.2 Instrument signal terminal wiring method
Signal terminal: "4,5,6,7,8,9" is the terminal number of the current input; "11,12,13,14" is the terminal
number of the voltage input.
A
B
C
N
UAUBUCUNIA
*IAIB *IBIC *IC
FUSES
A
B
C
N
UAUBUCUNIA
*IAIB *IBIC *IC
FUSES
A
B
C
UAUBUCUNIA
*IAIB *IBIC *IC
FUSES
3-phase-4-wire 3CT 3-phase-4-wire 3PT、3CT
3-phase-3-wire 2PT、2CT
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
S1 S2
* * * * * *
* * *
*
*
*
*
*
*
*
*
A
B
C
UAUBUCUNIA
*IAIB *IBIC *IC
FUSES
3-phase-3-wire 2CT
S1 S2
S1 S2
* * *
*
*
11 12 13 14 4 5 6 7 8 9
11 12 13 14 4 5 6 7 8 9 11 12 13 14 4 5 6 7 8 9
11 12 13 14 4 5 6 7 8 9
L
N
U1UNI1
*I1
FUSES
S1 S2
*
*
11 14 4 5
L
N
U1UNI1
*I1
FUSES
S1 S2
*
*
11 14 4 5
Single-phase:
Single-phase-2-wire 1CT Single-phase-2-wire 1PT、1CT
Three-phase
is the test terminal for CT secondary side short circuit.
NOTE：
Figure 9 Schematic diagram of instrument signal wiring
Note: is the test terminal for short circuit of CT secondary side.
An example of wiring for the communication part is shown below:
Correct wiring method: the communication cable shield is connected to the earth.
Figure 10 RS485 communication wiring diagram
It is recommended to add a matching resistor between A and B of the end meter, and the resistance range is
120Ω~10 kΩ.

7
5. Operating instructions
SET
Figure 11 LED front panel Figure 12 LCD front pane
5.1 Explanation for keypad functionality
Four keys of AMC series intelligent power collection and monitoring device separately indicate SET
key, LEFT key, RIGHT key, ENTER key from left to right.
Table 4 key function description
Panel key category
Key Function
SET key ( )
Under measurement mode, Press This key enter programming mode, meters hint
Input password PASS, after Input correct password, set up meters programming;
Under programming mode, used for Return to previous menu。
Left key( )
Under measurement mode, used for switching Display item;
Under programming mode, used for switching same class menu or ones place
reduced。
Right key( )
Under measurement mode, used for switching Display item;
Under programming mode, used for switching same class menu or ones place
increase。
ENTER key( )
Under measurement mode, when Displaying Electric energy data, press This key
can look over time sharing multi-rate Electric energy(if any);
Programming mode, used for menu item selection confirm and parameter
revision confirm。
Left key+ENTER
key( + )
Programming mode, this key combination is used for the reduction of hundreds
of digits.
Right key+ENTER
key( + )
Programming mode, this key combination is used to increase the hundred digits.
Note: When using the combination key, you can hold down the Left and Right key and then press the Enter
key.