Intech 2300-A8II Operating and maintenance instructions

14.22-1
INTECH Micro
2300-A8II
Installation Guide
When connecting to MicroScan V5 software
Overview
The Intech Micro 2300 series is a system of modular I/O Remote Stations, that add an even lower cost option to
Intech’s already extensive intelligent I/O Remote Station family, which connect automatically to the Intech
MicroScan V5 logging plus SCADA software package.
The 2300 series I/O stations are made up of stand-alone Digital and Analogue—Input/Output stations.
Communications between the computer running MicroScan V5 and the 2300 series stations is RS485
(1 pair cable) multi drop as standard with an option for TCP.
A 32bit ARM CPU is used in the 2300 series stations to provide high speed data processing and fast
communications turn around times. All 2300 series stations have been equipped with status led’s which are used
to indicate the status of the Inputs or Outputs. This visual indication assists with fault finding and diagnostics.
All the I/O stations clip directly onto an industry standard DIN rail. All stations have a minimum isolation of
1000VAC rms between the field and logic.
8 Channel mA Input Station

14.22-2
Section A:
2300-A8II Installation Guide Index.
Section A: Description, Ordering and Specifications.
Index. Page 2
Features, Description and Ordering Information. Page 3
Specifications. Dimensions. Page 4
Section B: Station ID Tables.
Station ID Tables. Page 5
Section C:
Status Indicators. Page 6
Power and RS485 Comms Wiring. Page 6
Connection Example Diagram. Page 7
Section D:
Dip Switch Settings. Page 7
Station Number Programming. Page 7
MODBUS Applications. Page 7
Section E: Wiring & Installation.
Mounting. Page 8
Power Supply Wiring. Page 8
RS485 Comms Signal Cabling. Page 8
Commissioning. Page 8
Computer to 2300 Series Comms Connections
USB485
USB to RS485
Converter
2300 I/O
Remote Station
70
71
RS485 DATA HI-WAY
CABLE POLARITY MUST
BE OBSERVED
RS485 DATA HI-WAY
CABLE POLARITY MUST
BE OBSERVED
Resistor=1k
End of Data
Hi-way
Junction Box
IMPORTANT:
(i) All cables must be
screened
(ii) All screens must be
connected together.
(iii) The screen must not
be earthed at any point.
Notes:
RS485 can only be used
with software release
Ver 5.0 onwards
TWISTED PAIRTWISTED PAIR
MicroScan V5
70
71
70
71
70
71
2300 I/O
Remote Station
2300 I/O
Remote Station
2300 I/O
Remote Station
COM TX+ TX-
74 71
USB
USB
70
COM TX+ TX-
74 71 70
2100-IS/NS
RS485
Converter/
Isolator
MicroScan V5
RS232
RS232
2300 I/O
Remote Station
70
71
RS485 DATA HI-WAY
CABLE POLARITY MUST
BE OBSERVED
RS485 DATA HI-WAY
CABLE POLARITY MUST
BE OBSERVED
Resistor=1k
End of Data
Hi-way
Junction Box
IMPORTANT:
(i) All cables must be
screened
(ii) All screens must be
connected together.
(iii) The screen must not
be earthed at any point.
Notes:
RS485 can only be used
with software release
Ver 5.0 onwards
TWISTED PAIRTWISTED PAIR
70
71
70
71
70
71
2300 I/O
Remote Station
2300 I/O
Remote Station
2300 I/O
Remote Station
2300-NET
10/100 Ethernet
to RS485
Converter
MicroScan V5
COM TX+ TX-
74 71 70
Ethernet
TCP/IP
2300 I/O
Remote Station
70
71
RS485 DATA HI-WAY
CABLE POLARITY MUST
BE OBSERVED
RS485 DATA HI-WAY
CABLE POLARITY MUST
BE OBSERVED
Resistor=1k
End of Data
Hi-way
Junction Box
IMPORTANT:
(i) All cables must be
screened
(ii) All screens must be
connected together.
(iii) The screen must not
be earthed at any point.
Notes:
RS485 can only be used
with software release
Ver 5.0 onwards
TWISTED PAIRTWISTED PAIR
70
71
70
71
70
71
2300 I/O
Remote Station
2300 I/O
Remote Station
2300 I/O
Remote Station

14.22-3
INTECH Micro
2300-A8II 8 Isolated
Current Inputs
2300 models include:
2300-A8I : 8 Current Inputs.
2300-A8II : 8 Isolated Current Inputs.
2300-A8VI : 8 Isolated Voltage Inputs.
2300-Tc8 : 8 Isolated Thermocouple Inputs.
2300-RTD6 : 6 RTD Inputs.
2300-MULTI : 2 RTD, 2 AI, 1 AO, 4 DI, 2 DO.
2300-D16 : 16 Digital Inputs.
2300-RO4 : 4 Relay Outputs.
2300-NET : Isolated Ethernet to RS485.
Features.
8 Isolated Current Inputs (4~20mA or 0~20mA).
Modbus RTU RS485.
Easy Programming Via MicroScan Maps.
Plug-in Connectors Makes Replacement Easy.
Programmable Station Number.
Programming Information Retained on Power Down.
24 V DC Power Supply.
Easy to Install.
Compact DIN Rail Mount Enclosure.
Description.
The 2300-A8II remote station has 8 isolated current inputs. The inputs are fully isolated from input to logic and
between inputs. This station is ideal for monitoring existing 4~20mA current loops which are isolated from each
other and cannot be connected to a common point of reference.
Ordering Information.
2300-A8II 8 Isolated Current Inputs. RS485 COMMS, Modbus RTU. 24Vdc Power Supply.
Quality Assurance Programme.
The modern technology and strict procedures of the ISO9001 Quality Assurance Programme applied during
design, development, production and final inspection grant long term reliability of the instrument. This instrument
has been designed and built to comply with EMC and Safety Standards requirements.
CAUTION: Dangerous voltages may be present. The 2300-A8II has no user serviceable parts.
Protective enclosure only to be opened by qualified personnel.
Remove ALL power sources before removing protective cover.
1.1 Factory Configurations
The Intech Micro 2300 series I/O Remote Stations are factory configured to connect directly to MicroScan V5
software. Only the Station number (station ID) needs to be set via the easily accessible dip switches. No other
station settings are required, making the new 2300 series one of the most friendly available. Simply setup the
Station number on each 2300 station, install and the MicroScan software will scan the data hi-way and
automatically locate each station. All stations will be displayed on a visual map.
1.1.1 I/O Expansion
Expansion is made easy by simply installing another station with a unique station number and instructing
MicroScan to find a new station. MicroScan will support up to 127 stations. Although RS485 data hi-way is rated
for 1200 metres, it is recommended to use an RS485 booster every 500 metres or between each set of 16
stations. Due to the large variation in site conditions, this advice is based on typical site conditions and does not
guarantee no fault operating conditions.

14.22-4
2300-A8II Specifications.
Current Inputs:
-Input Points 8
-Input Current 0(4) ~ 20 mA
-Input Type Range Resolution
-1 0 – 4095 12 bits
-2 0–20.000mA 1uA
-3 +/-20.000mA 1uA
-Drift 100ppm/°C
-Isolation 1000Vrms between field and logic
350Vpeak between each input
Connectors: -Logic Power and Comms 4 Pin plug-in connector on side of station
-Inputs 18 Way screw plug-in connector on top of station
Comms: -Protocols RS485, Modbus RTU.
-Baud Rate 9600.
-Format 8 bit, No Parity, 1 Stop.
Power Supply: -Logic Supply Voltage 12~24Vdc
-Logic Supply Current 58mA @ 12V / 31mA @ 24V
Safety and EMC Compliances:
EMC Compliance 89/336/EEC and Low Voltage Equipment Directive 73/23/EEC.
Safety Compliance IEC 950.
General Specifications: (Unless otherwise stated in other input specifications.)
Operating Temperature -10~50˚C.
Storage Temperature -40~85˚C.
Operating Humidity Up to 95% non condensing.
Housing -Dimensions L=97.5, W=22.6, H=109mm.
-Mounting 35mm Symmetrical Mounting Rail.
Note 1. Contact INTECH INSTRUMENTS for more detailed programming information.
Product Liability. This information describes our products. It does not constitute guaranteed properties and is not intended to affirm the
suitability of a product for a particular application. Due to ongoing research and development, designs, specifications, and documentation
are subject to change without notification. Regrettably, omissions and exceptions cannot be completely ruled out. No liability will be
accepted for errors, omissions or amendments to this specification. Technical data are always specified by their average values and are
based on Standard Calibration Units at 25C, unless otherwise specified. Each product is subject to the ‘Conditions of Sale’.
Warning: These products are not designed for use in, and should not be used for patient connected applications. In any critical
installation an independent fail-safe back-up system must always be implemented.
2300-A8II Dimensions.
The 2300-A8II enclosure is shown below. The station clips directly onto an industry standard DIN rail. Field
wiring is on the top of the station via a separate plug in connector. The station power and RS485
communications wiring are on a separate plug in connector on the side of the housing.
Allow at least 25mm on front and below the station to accommodate the wiring. Ensure that enough space is
available above and below the station for good ventilation.
www.intech.co.nz

14.22-5
Section B:
Station ID Table.
The following table assists with the setting up of DIP switches for the required Station ID (Station number).
STATION
ID DIP SWITCH SETTINGS
SW1 SW2 SW3 SW4 SW5 SW6 SW7
0 OFF OFF OFF OFF OFF OFF OFF
1 ON OFF OFF OFF OFF OFF OFF
2 OFF ON OFF OFF OFF OFF OFF
3 ON ON OFF OFF OFF OFF OFF
4 OFF OFF ON OFF OFF OFF OFF
5 ON OFF ON OFF OFF OFF OFF
6 OFF ON ON OFF OFF OFF OFF
7 ON ON ON OFF OFF OFF OFF
8 OFF OFF OFF ON OFF OFF OFF
9 ON OFF OFF ON OFF OFF OFF
10 OFF ON OFF ON OFF OFF OFF
11 ON ON OFF ON OFF OFF OFF
12 OFF OFF ON ON OFF OFF OFF
13 ON OFF ON ON OFF OFF OFF
14 OFF ON ON ON OFF OFF OFF
15 ON ON ON ON OFF OFF OFF
16 OFF OFF OFF OFF ON OFF OFF
17 ON OFF OFF OFF ON OFF OFF
18 OFF ON OFF OFF ON OFF OFF
19 ON ON OFF OFF ON OFF OFF
20 OFF OFF ON OFF ON OFF OFF
21 ON OFF ON OFF ON OFF OFF
22 OFF ON ON OFF ON OFF OFF
23 ON ON ON OFF ON OFF OFF
24 OFF OFF OFF ON ON OFF OFF
25 ON OFF OFF ON ON OFF OFF
26 OFF ON OFF ON ON OFF OFF
27 ON ON OFF ON ON OFF OFF
28 OFF OFF ON ON ON OFF OFF
29 ON OFF ON ON ON OFF OFF
30 OFF ON ON ON ON OFF OFF
31 ON ON ON ON ON OFF OFF
32 OFF OFF OFF OFF OFF ON OFF
33 ON OFF OFF OFF OFF ON OFF
34 OFF ON OFF OFF OFF ON OFF
35 ON ON OFF OFF OFF ON OFF
36 OFF OFF ON OFF OFF ON OFF
37 ON OFF ON OFF OFF ON OFF
38 OFF ON ON OFF OFF ON OFF
39 ON ON ON OFF OFF ON OFF
40 OFF OFF OFF ON OFF ON OFF
41 ON OFF OFF ON OFF ON OFF
42 OFF ON OFF ON OFF ON OFF
43 ON ON OFF ON OFF ON OFF
44 OFF OFF ON ON OFF ON OFF
45 ON OFF ON ON OFF ON OFF
46 OFF ON ON ON OFF ON OFF
47 ON ON ON ON OFF ON OFF
48 OFF OFF OFF OFF ON ON OFF
49 ON OFF OFF OFF ON ON OFF
50 OFF ON OFF OFF ON ON OFF
STATION
ID DIP SWITCH SETTINGS
SW1 SW2 SW3 SW4 SW5 SW6 SW7
51 ON ON OFF OFF ON ON OFF
52 OFF OFF ON OFF ON ON OFF
53 ON OFF ON OFF ON ON OFF
54 OFF ON ON OFF ON ON OFF
55 ON ON ON OFF ON ON OFF
56 OFF OFF OFF ON ON ON OFF
57 ON OFF OFF ON ON ON OFF
58 OFF ON OFF ON ON ON OFF
59 ON ON OFF ON ON ON OFF
60 OFF OFF ON ON ON ON OFF
61 ON OFF ON ON ON ON OFF
62 OFF ON ON ON ON ON OFF
63 ON ON ON ON ON ON OFF
64 OFF OFF OFF OFF OFF OFF ON
65 ON OFF OFF OFF OFF OFF ON
66 OFF ON OFF OFF OFF OFF ON
67 ON ON OFF OFF OFF OFF ON
68 OFF OFF ON OFF OFF OFF ON
69 ON OFF ON OFF OFF OFF ON
70 OFF ON ON OFF OFF OFF ON
71 ON ON ON OFF OFF OFF ON
72 OFF OFF OFF ON OFF OFF ON
73 ON OFF OFF ON OFF OFF ON
74 OFF ON OFF ON OFF OFF ON
75 ON ON OFF ON OFF OFF ON
76 OFF OFF ON ON OFF OFF ON
77 ON OFF ON ON OFF OFF ON
78 OFF ON ON ON OFF OFF ON
79 ON ON ON ON OFF OFF ON
80 OFF OFF OFF OFF ON OFF ON
81 ON OFF OFF OFF ON OFF ON
82 OFF ON OFF OFF ON OFF ON
83 ON ON OFF OFF ON OFF ON
84 OFF OFF ON OFF ON OFF ON
85 ON OFF ON OFF ON OFF ON
86 OFF ON ON OFF ON OFF ON
87 ON ON ON OFF ON OFF ON
88 OFF OFF OFF ON ON OFF ON
89 ON OFF OFF ON ON OFF ON
90 OFF ON OFF ON ON OFF ON
91 ON ON OFF ON ON OFF ON
92 OFF OFF ON ON ON OFF ON
93 ON OFF ON ON ON OFF ON
94 OFF ON ON ON ON OFF ON
95 ON ON ON ON ON OFF ON
96 OFF OFF OFF OFF OFF ON ON
97 ON OFF OFF OFF OFF ON ON
98 OFF ON OFF OFF OFF ON ON
99 ON ON OFF OFF OFF ON ON
100 OFF OFF ON OFF OFF ON ON

14.22-6
Section C.
Status Indicators.
Power: Flashes to indicate the CPU is running.
RS485 Rx: Flashes to indicate the unit has received a valid Modbus message.
RS485 Tx: Flashes to indicate the unit has sent a Modbus message.
Input Status: “ON” when the input is zero.
“OFF” when the input is normal.
“Flashing” when the input is over range.
Power and RS485 Comms Wiring.
Warning: If the power/communication connections are reversed, the remote station may become faulty.
STA-
TION ID DIP SWITCH SETTINGS
101 ON OFF ON OFF OFF ON ON
102 OFF ON ON OFF OFF ON ON
103 ON ON ON OFF OFF ON ON
104 OFF OFF OFF ON OFF ON ON
105 ON OFF OFF ON OFF ON ON
106 OFF ON OFF ON OFF ON ON
107 ON ON OFF ON OFF ON ON
108 OFF OFF ON ON OFF ON ON
109 ON OFF ON ON OFF ON ON
110 OFF ON ON ON OFF ON ON
111 ON ON ON ON OFF ON ON
112 OFF OFF OFF OFF ON ON ON
113 ON OFF OFF OFF ON ON ON
114 OFF ON OFF OFF ON ON ON
115 ON ON OFF OFF ON ON ON
116 OFF OFF ON OFF ON ON ON
117 ON OFF ON OFF ON ON ON
118 OFF ON ON OFF ON ON ON
119 ON ON ON OFF ON ON ON
120 OFF OFF OFF ON ON ON ON
121 ON OFF OFF ON ON ON ON
122 OFF ON OFF ON ON ON ON
123 ON ON OFF ON ON ON ON
124 OFF OFF ON ON ON ON ON
125 ON OFF ON ON ON ON ON
126 OFF ON ON ON ON ON ON
127 ON ON ON ON ON ON ON
RS485 Tx
RS485 Rx
Power
Input Status
1 - 8
Switch 1 Switch 10
1
3
4
2- 12Vdc @ 58mA
Pin Connection
+ 24Vdc @ 31mA
+ Comms
- RS485
70
71
81
82
2300-A8II
MicroScan V5
RS485
TCP/IP
TCP/IP
2300-NET
MicroScan V5
RS232
RS232
RS485
Examples of connectivity—RS485 data Hi-Way
RS485
MicroScan V5
USB485
USB
USB
2100-IS or 2100-NS
RS232 to RS485
Converter

14.22-7
Connection Example Diagrams.
The following diagram shows how the analogue inputs are connected to 0(4)~20mA source. All of the common
terminals are isolated from each other.
Section D:
Dip Switch Settings.
DIP SWITCH FUNCTION DESCRIPTION
1 STATION ID +1 Station ID’s from 0 to 127 are set up using switches 1 to 7
2 STATION ID +2 “
3 STATION ID +4 “
4 STATION ID +8 “
5 STATION ID +16 “
6 STATION ID +32 “
7 STATION ID +64 “
8 Offset Adjust On = 4~20mA input
Off = 0~20mA input
9 Off
10 BAUD RATE For MicroScan use DIP Switch 10 ON (Factory default)
2300-A8II Station Number Programming and Serial Number.
Important: When commissioning remote stations, you must programme a unique station number before using the
programme setup button in the Scada Software. Requires MicroScan Version 5.0 onwards.
1. Close the MicroScan Scada down and turn the power off to the 2300 485 converter. Connect the new
Remote Station, referring to ‘Wiring and Installation’ and ‘Commissioning’
2. Turn power back on to the 2300 485 converter, and start MicroScan, under Setup Tools select Add
New Station
3. Select ‘Page and Line Settings’, or ‘Tag Setup’ and configure as per the MicroScan help file.
Important Note:
If using the USB485 converter, do not connect to the computer until after MicroScan has been installed.
MODBUS Applications:
If using the 2300-A8II station in other applications where MODBUS is required, please refer to the
2300-A8II MODBUS supplementary manual which is available for download from the Intech website:
www.intech.co.nz/2300
Input 1
Common 1
Input 2
Common 2
Input 3
Common 3
Input 4
Common 4
0Vdc
+24Vdc
+
Input 5
Common 5
Input 6
Common 6
Input 7
Common 7
Input 8
Common 8
Two Wire Transmitter
0(4)-20mA
+24Vdc
+
Current Source
0(4)-20mA
-Sensor
-
2300-A8II

14.22-8
Section E: 2300-A8II Wiring & Installation.
The 2300-A8II is to be Installed and Serviced by Service Personnel Only. No Operator / User
Serviceable Parts.
All power and signals must be de-energised before connecting any wiring, or altering any Jumpers or Dip Switch-
es. Do not start the MicroScan before programming in a unique station number. Refer ‘Station Number
Programming and Serial Number’.
Mounting.
* Also refer to Connection Diagrams and Notes.
(1) Mount in a clean environment in an electrical cabinet on 35mm Symmetrical mounting rail.
(2) Draft holes must have minimum free air space of 20mm. Foreign matter must not enter or block draft
holes.
(3) Do not subject to vibration or excess temperature or humidity variations.
(4) Do not mount in cabinets with power control equipment.
(5) To maintain compliance with the EMC Directives the 2300-A8II is to be mounted in a fully enclosed steel
fire cabinet. The cabinet must be properly earthed, with appropriate input / output entry points and cabling.
Power Supply Wiring.
* Also refer to Connection Diagrams and Notes - ‘Power and RS485 Comms Wiring’ on page 14.22-6.
RS485 Comms Signal Cabling.
(1) Use only low capacitance, twisted pair, overall screened data cable. The cable must equal or better the
following specifications.
Cable Specifications.
Conductor Size. 7/0.20mm, 24AWG
Conductor Resistance @ 20C. 8.9/100m
Max. Working Voltage. 300Vrms
Capacitance between wires of a pair. 50F/m
Capacitance between each wire to all others bunched together. 95F/m
Cross-talk between pairs: @ 1kHz
@ 100kHz >-90dB/100m >-50dB/100m
Characteristic Impedance . @ 100kHz 135
Attenuation of a pair:
@ 1kHz
@ 10kHz
@ 100kHz
@ 50kHz
@ 1MHz
@ 1.5MHz
0.15dB/100m
0.42dB/100m
0.8dB/100m
0.9dB/100m
1.9dB/100m
2.4dB/100m
NOTE: All cables are to be subject during manufacture to in-process spark testing @ 4kVrms.
All cables are to be tested between conductors and conductors to screen for 1min @ 1500Vrms.
(2) Minimum cable pairs: RS485 = 1. (Plus overall screen.)
(3) Take care not to stress or damage cables during installation.
(4) Total length of trunk line, including spurs, is not to exceed 1200m without isolating boosters.
(5) Terminating resistors -1k.
(6) Cabling paths should avoid sources of radio frequency interferences such as fluorescent lights, variable
speed motor drives, welding equipment, radio transmitters, etc.
(7) There should be a minimum of 200mm physical separation between power cables and data cables.
(8) Data cables should not be exposed to excessive heat or moisture, and should not be buried directly in the
ground without protection.
(9) Avoid powering a remote station or controller from the same power supply as a variable speed drive.
(10) All unused twisted pairs should be terminated at both ends with 1k resistors. DO NOT ground unused
pairs.
Commissioning.
(1) Check that all the above conditions have been met, and the wiring
checked, before applying power to the 2300-A8II.
www.intech.co.nz
Christchurch Ph: [phone]
Auckland Ph: 09 827 1930
Email: [e-mail]
2300-A8II 080411