AX
-8
Analog Expander
Installation
and Operation
Manual
BG0259 Rev. A5
AX-8 Analog Expander
Installation and
Operation Manual
LIMITED WARRANTY
The manufacturer offers the customer a 24-month functional warranty on the instrument for faulty
workmanship or parts from date of dispatch from the distributor. In all cases, this warranty is valid for
36 months from the date of production. This warranty is on a return to factory basis.
The manufacturer does not accept liability for any damage caused by instrument malfunction. The
manufacturer accepts no responsibility for the suitability of the instrument to the application for which
it was purchased.
Failure to install, set up or operate the instrument according to the instructions herein will void the
warranty.
Your instrument may be opened only by a duly authorized representative of the manufacturer. The
unit should only be opened in a fully anti-static environment. Failure to do so may damage the
electronic components and will void the warranty.
NOTE
The greatest care has been taken to manufacture and calibrate your equipment. However, these
instructions do not cover all possible contingencies that may arise during installation, operation or
maintenance, and all details and variations of this equipment are not covered by these instructions.
For additional information regarding ins tallation, operation or maintenance of this equipment, contact
the manufacturer or your local representative or distributor.
IMPORTANT
F Ensure that all incoming AC power and other power sources are turned OFF before performing
any work on the unit. Failure to do so may result in serious or even fatal injury
equipment damage.
and/or
F Before connecting the unit to the power source, check the label on the rear to ensure that your
unit is equipped with the appropriate power supply.
F Do not connect the unit to a power source if it is damaged.
F Do not expose the unit to rain or moisture.
F Read this manual thoroughly before connecting the unit.
Table of Contents
1 Introduction .......................................................................................... 1
2 Field Setting...........................................................................................................................3
2.1 Default Setting.................................................................................................................3
2.2 Changing the Communication Parameters (Firmware Version 0.10).................3
3 Installation..............................................................................................................................5
3.1 Mechanical Installation..................................................................................................5
3.2 Electrical Installation......................................................................................................6
4 Operation................................................................................................................................9
4.1 Power Up.........................................................................................................................9
4.2 Communication ..............................................................................................................9
5 Technical Specifications ....................................................................................................11
BG0259 Rev A5
1 Introduction
1.
The AX-8 Analog Expander is an instrument that enables Powermeters to interface
with other devices that require analog signals. The AX-8 can be connected to any
Powermeter equipped with an RS-422 communication port and analog expander
option.
The AX-8 provides up to 8 analog outputs. Two units can be connected in
sequence, providing as many as 16 analog outputs with use of one Powermeter1.
For information on analog output and analog expander setup and connections,
refer to the Installation and Operation Manual of the specific Powermeter.
Features
Accuracy - The AX-8 provides 8 or 9 bit resolution on each analog output. Output
values on all channels are updated continuously at a rate of 0.3 to 0.5 seconds,
depending on the speed of communication (baud rate).
Flexibility - The analog outputs are provided with current output options of 0-20
mA and 4-20 mA, 0-1 mA and ±1 mA , and voltage output options of 0-10V DC
and ±10V DC. Depending on the specific model of Powermeter, a wide range of
output values are user-selectable, from the Powermeter front panel or via
communications software.
Installation - DIN rail or wall mounting. No auxiliary power supply is required; an
internal switching power supply with a wide AC/DC range is provided.
Communications - The AX-8 is connected to the Powermeter using a twisted pair
cable via the RS-422 port, using ASCII, Modbus or DNP3.0 protocols. This allows
communication ove r a distance of up to 1000 meters at a baud rate of up to 19,200
bps. Installation of the AX-8 does not interfere with the inclusion of the Powermeter
in a communication network (RS -422 or RS-485) of up to 31 Powermeters.
Figure 1-1 shows a typical communication network with two AX-8 expanders.
1
If your Powermeter supports 7 (14) channels, then the AX-8 will also provide 7 (14) channels.
1
POWERMETER
POWERMETER
POWERMETER
RS-422/RS-485
00-02021
L3/L31KVL1/L1
2
VOLTAGE
VOLTAGE
HARMONIC ANALYZER
RESET
SELECT
MAX
PAGING
ENERGY
KVARH/MVARH
KA
REACTIVE ENERGY
UNBALANCED CURRENT
AHz
SYSTEM 290
APPARENT POWER
CURRENT
CURRENT
CURRENT
L3/L31KVL1/L1
2
VOLTAGE
VOLTAGE
HARMONIC ANALYZER
RESET
SELECT
MAX
PAGING
ENERGY
KVARH/MVARH
REACTIVE ENERGY
UNBALANCED CURRENT
A
Hz
SYSTEM 290
APPARENT POWER
CURRENT
CURRENT
CURRENT
KV
SELECT
PAGING
ENERGY
KA
UNBALANCED CURRENT
SYSTEM 290
APPARENT POWER
ANALOG OUTPUT
#1
ANALOG EXPANDER AX-8
ANALOG OUTPUTS
POWER SUPPLY
RX
RS-422
RX
RXTXRXTXRX
TX
POWER SUPPLY
DC
ON
NL+AC
_
POWER METER
+ +
TX
RX
RS-422
RXTX
OUT
ANALOG EXPANDER AX-8
NETWORK
__
TXTXRX
RS-422/RS-485
+
RX +_RX
ANALOG OUTPUTS
1
_
+
TX
432 5
_
_
+
RX
UP TO 31 POWERMETERS
IN
VOLTAGE
POWER FACTOR
V
A
KV
KA
MAX.AMP.DEMAND
REACTIVE POWER
ACTIVE POWER
V
A
KV
KA
L 2/ L2 3
MAX.AMP.DEMAND
ACTIVE ENERGY
V
A
KA
876
_ _+_+_
+_+_+
+
MAX.AMP.DEMAND
RESET
KVAR
KVA
MVAR
MVA
MAX.DEMAND
FREQUENCY
KW
MW
MAX.DEMAND
KWH/MWH
SATEC
290H
CURRENT
VOLTAGE
POWER FACTOR
V
A
KV
KA
MAX.AMP.DEMAND
REACTIVE POWER
CURRENT
ACTIVE POWER
V
A
KV
KA
L 2/ L2 3
MAX.AMP.DEMAND
ACTIVE ENERGY
CURRENT
V
A
MAX.AMP.DEMAND
RESET
KVAR
KVA
MVAR
MVA
MAX.DEMAND
FREQUENCY
KW
MW
MAX.DEMAND
KWH/MWH
SATEC
290H
ANALOG OUTPUT
USER'S ANALOG
INPUTS (PLC)
AX-8
ADDRESS 0
NETWORK
POWER METER
L N
RS-422/RS-485
_
_ _
DCAC+
ON
__
++
++
TX RX
TX
AX-8
ADDRESS 1
HARMONIC ANALYZER
VOLTAGE
POWER FACTOR
V
A
KV
KA
L 1/ L1 2
MAX.AMP.DEMAND
REACTIVE POWER
VOLTAGE
ACTIVE POWER
V
A
KV
KA
L 2/L 23
MAX.AMP.DEMAND
VOLTAGE
ACTIVE ENERGY
V
A
L3 /L3 1
1 2 53 4 6 7 8
_
+
+_+_+_+_+_+_+
KVAR
KVA
MVAR
MVA
MAX.DEMAND
FREQUENCY
KW
Hz
MW
A
MAX.DEMAND
KWH/MWH
SATEC
KVARH/MVARH
290H
REACTIVE ENERGYMAX.AMP.DEMAND
#2 #31
IN
RS-422 ONLY
_
RS
RESET
MAX
RESET
Figure 1-1 AX-8 Analog Expanders in a Typical Communication Network
2
2 Field Setting
2.
2.1 Default Setting
The Analog Expander is set by the dip switches S1 and S2 on the PCB located
inside the AX-8 case. The default setting is as follows:
Expander address 0 1
Analog output range factory set as per order
Protocol ASCII
Data format 8N (8 bit, no parity)
Baud rate 9600 bps
If you require a change to this setting, open the case as per Sections 2.2 - 2.4
below and change the setting.
2.2 Changing the Communication Parameters (Firmware Version 0.10)
1. Disassemble the AX-8 case: remove the 8 screws from the outside of
the case and take off the rear cover.
2. Set the DIP switches on the PCB (see Figure 2-1) as shown in Tables 2-1
and 2-2 below.
3. Re-assemble the case: put the rear cover back on, insert and tighten the 8
screws.
1
This address allows use of up to 7 or 8 analog outputs, according to the analog output
setup in the Powermeter. Use of additional outputs from one Powermeter requires
installation of an additional AX-8 unit with address ‘1’.
3
1
S2
ONON
R16
R14
R30
R29
R23
R18
R24
R28
R38
R27
R35
1
R25
R110
R109
C102
1
R105
R104
R106
C101
U102
U101
1
R107
R103
C204
00-03008
431 2 765 8
R36
+15V
L3
D8
TOP PC0117 REV.A1
CE5
S1
+
C18
R26
D7
C14
+
1
U6
CE7
D5
R42
86 753 421
C12
R43
C13
+
CE4
+
Figure 2-1 Location of Dip Switches on AX-8 PCB
Table 2-1 DIP Switch S1 * = default
AX-8 Option
SW1
Addr0
Address 0 OFF OFF OFF
Address 1
ON
Address 2 OFF
Address 3
ON ON
Address 4 OFF OFF
Address 5
ON
Address 6 OFF
Address 7
ON ON ON
SW2
Addr1
SW3
Addr 2
SW4
N/A
SW5
N/A
SW6 SW7 SW8
Factory Set
OFF OFF
ON
OFF
OFF
ON
OFF
ON
ON ON
Table 2-2 DIP Switch S2 (Serial Port) * = default
AX-8 Option SW1
Mode
SW2
Data
SW3
Parity
SW4
N/A
SW5
Baud 0
SW6
Baud 1
SW7
Baud 2
R108
R101
R204
SW8
Baud 3
ASCII mode OFF
Binary (transparent)
ON
mode
7 bit/Even parity OFF
8 bit/No parity
8 bit/Even parity
ON
ON ON
ON
OFF
110 baud OFF OFF OFF OFF
300 baud
ON
600 baud OFF
1200 baud
ON ON
2400 baud OFF OFF
4800 baud
ON
9600 baud OFF
19200 baud
ON ON ON
OFF OFF OFF
ON
OFF OFF
OFF OFF
ON
OFF
ON
ON ON
OFF
OFF
OFF
OFF
4
5
3 Installation
3.
3.1 Mechanical Installation
The AX-8 should be mounted in a dirt-free environment away from heat
sources and high electrical fields. Mounting may be either standard DIN
rail or wall mount. Only front access is required for wiring.
4.685"
(186.0)
5.118"
(130.0)
01-05001-1
2.992"
ANALOG EXPANDER AX-8
7.323"
(76.0)
PANEL
(36.3)
1.430"
(165.0)
6.496"
Figure 3-1 Standard DIN Rail Mounting
6
ANALOG EXPANDER AX-8
PANEL
LOCK WASHER
SCREW
Figure 3-2 Wall Mounting
3.2 Electrical Installation
For AX-8 connections to the power supply, communications and analog
outputs, see Figures 3-3 (RS-422 network) or 3-4 (RS-485 network).
Power Supply
Use a dedicated breaker from a proper power source, from which the unit
can be turned off. All AX-8 analog outputs are provided with an internal
power supply; no external power supply for analog outputs is required.
Communications
The AX-8 is connected on one side to the Powermeter via the RS-422
input, and from the other side, to the multi-drop communication network
via the RS422 or RS-485 output, using the ASCII, Modbus or DNP3.0
protocol.
Communications may be over a distance of up to 1000 meters and at a
baud rate of up to 19,200 bps. A twisted pair cable of 0.33mm2/22AWG is
recommended.
Analog Output Options
00-03020
AX-8
RS-422
(IBM PC OR PLC)
PORT#2RS-422
TERMINAL
POWERMETER
TERMINAL
POWERMETER
ANALOG EXPANDER AX-8
RS-422/RS-485
+
_
1
2
7653421
34567
8
8
LOADS
R1#1
-Rx
-Tx
+Rx
+Tx
+Tx
+Rx
-Tx
-Rx
UP TO2R
+Tx
+Rx
-Tx
-Rx
-Rx
-Tx
+Rx
+Tx
-Rx
-Tx
+Rx
+Tx
TERMINATION RESISTORS
*
Current output options Voltage output options
0-20mA, 4-20mA
0-1mA, ±1mA
0-10V DC and ±10V DC
Loads must be connected to analog outputs 1-8 according to their polarity.
POWER SUPPLY
L N
DCAC+
ON
POWER SUPPLY
110-230V AC/DC
OR 48V DC
OR 24V DC
OR 12V DC
*
*
*
5A
as per customer order
_
POWER METER
RS-422
_ _
++
TX RX
TX
RX
RXTX RXTXRXTX
NETWORK
__
++
RX
ANALOG OUTPUTS
+_+_+_+_+_+_+
-Tx
-Rx
+Tx
+Rx
_
MASTER
COMMUN.
PORT
POWERMETER
RS-422
COMMUN.
NETWORKPOWERMETER
#31
#2
RS-422
R2R1= =200-500 OHM
0.5W
Figure 3-3 AX-8 Connections in RS-422 Network
F Be sure that all incoming AC power and other power sources
are turned OFF before performing any connections.
7
*
00-03021
AX-8
RS-422/485
(IBM PC OR PLC)
PORT#2TERMINAL
POWERMETER
TERMINAL
POWERMETER
ANALOG EXPANDER AX-8
RS-422/RS-485
+
_
1
2
7653421
34567
8
8
LOADS
R1#1
-Rx
-Tx
+Rx
+Tx
+Tx
+Rx
-Tx
-Rx
UP TO2R
+Tx
+Rx
-Tx
-Rx
-Rx
-Tx
+Rx
+Tx
-Rx
-Tx
+Rx
+Tx
TERMINATION RESISTORS
POWER SUPPLY
110-230V AC/DC
OR 48V DC
OR 24V DC
OR 12V DC
*
*
*
5A
as per customer order
POWERMETER
RS-422
COMMUN.
POWER SUPPLY
L N
_
DCAC+
ON
POWER METER
RS-422
_ _
++
TX RX
TX
RX
RXTX RXTXRXTX
NETWORK
__
++
ANALOG OUTPUTS
+_+_+_+_+_+_+
RX
-Tx
-Rx
+Tx
+Rx
_
MASTER
COMMUN.
PORT
RS-422/485
NETWORK
#31
#2
RS-422/485
POWERMETER
R2R1 = =200-500 OHM
0.5W
Figure 3-4 AX-8 Connections in RS-485 Network
F Be sure that all incoming AC power and other power sources
are turned OFF before performing any connections.
8
4 Operation
4.
Refer to the Installation and Operation Manual of the specific Powermeter for
instructions on Analog Expander and communication parameters setup.
4.1 Power Up
Close the power feed breaker; the ‘ON’ LED will light up.
4.2 Communication
When you program your powermeter to output data to external analog outputs, the
powermeter periodically updates the AX-8 analog outputs (each 300-500 ms) via
the pair of wires on the RS-422 communications link used for transmitting data. At
that time, the transmission (output) line of the AX-8 is disconnected from the
external network, while the receive line is directly connected to the powermeter
port so that the instrument is constantly ‘listening’ to the network.
When data is requested from the powermeter by a master computer (or controller),
the powermeter instructs the AX-8 to switch the transmission line to the external
network, and then sends the response. After the response message is sent out, the
transmission line is disconnected from the network and the powermeter continues
updating the AX-8 outputs.
The AX-8 can work with different ASCII and non-ASCII network protocols. If you
use an ASCII communications protocol, set the switch #1 on the DIP switch block
S2 to OFF in order to put the AX-8 into ASCII mode. The ASCII message frame
should be ended with two characters CR/LF (ASCII 13 and 10). If you are using
non-ASCII communications protocol such as Modbus or DNP 3.0, set the switch #1
on the DIP switch block S2 to ON to put the AX-8 into binary (transparent) mode. In
this event, the AX-8 will not decode the message frame and the transmission line is
disconnected in 3.5 character time after the response message is sent out.
Indicator LEDs
The AX-8 is provided with a single Rx LED (network indication) and a pair of Rx -Tx
LEDs (Powermeter indication) which operate as shown in Figure 4-1:
9
1 2 3
Transmission Status LED Indication
no transmission no LEDs lit up
Powermeter to AX-8 single Rx LED (‘1’ in Figure 4-1) flashes
RS-422: master to Powermeter Powermeter Tx LED (‘2’) flashes
Powermeter to master Powermeter Rx LED (‘3’) flashes
RS-485: master to Powermeter
Powermeter to master
POWER METER
RS-422
++
TX RX
TX
RX
_ _
RXTX RXTXRXTX
Powermeter Rx and Tx LEDs flash
RS-422/RS-485
NETWORK
++
__
RX
Figure 4-1 Detail of Communication LEDs on AX-8
10
5 Technical Specifications
5.
Instrument serial
communications
Network serial communications RS-422 / RS-485
Baud rate (bps) 110, 300, 600,1200, 2400, 4800, 9600, 19200
RS-422
Inter-channel separation
Galvanic isolation:
Power Supply
Communication
Accuracy
Temperature coefficient
Resolution 8 bits
Current output Span (factory set) External resistance
Voltage output
Power supply ratings (factory set)
120&230 V AC
and 110&220 V DC
option 12 V DC
option 24 V DC
option 48 V DC
Ambient temperature
> 95dB
2500V rms
1000V DC
±0.5% of full scale for current output up to 2500 Ω
±2.0% of full scale for current output from 2500 Ω
to 10000 Ω
±50ppm/°C
4-20mA
± 1mA
0-20mA
0-1mA
0-10V DC
±10V DC
90- 264V AC 50/60 Hz
and 110 - 290V DC burden 10 W
10 - 16 VDC
18 - 36 VDC
36 - 72 VDC
Operation: -20°C to +60°C
Storage: -25°C to +80°C
up to 750 Ω
up to 10000 Ω
up to 750 Ω
up to 10000 Ω
from 1000 Ω
from 1000 Ω
Humidity 95% max. non-condensing
Enclosure Aluminum, anodized
Mounting 35 mm DIN rail or wall mount
Weight 0.6 kg (1.32 lb.)
Dimensions 186 x 75 x 109 mm (7.33 x 2.95 x 4.3 inch)
11
Technical Specifications (continued)
Standards UL File # E129258
CE-EMC: 89/336/EEC as amended by 92/31/EEC and 93/68/EEC
CE-SAFETY: 72/23/EEC as amended by 93/68/EEC and
93/465/EEC
Harmonized standards to which conformity is declared:
EN55011:1991; EN50082-1:1992; EN61010-1:1993; A2/1995
ANSI C37.90.1 1989 Surge Withstand Capability (SWC)
ANSI C62.41 - 1991 Standard Surge
EN50081-2 Generic Emi ssion Standard - Industrial Environment
EN50082-2 Generic Immunity Standard - Industrial Environment
EN55022: 1994 Class A
EN61000-4-2
ENV50140: 1983
ENV50204: 1995 (900MHz)
ENV50141: 1993
EN61000-4-4:1995
EN61000-4-8: 1993
12
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