Digital Signal Converter
IVA-420I
User Manual
ERP 511399
2/07
12700 Stowe Dr., Ste 1
Poway, CA 92064
Ph: 858-578-7887
Fx: 858-578-4633
Email: info@inteccontrols.com
www.inteccontrols.com
00
Symbol Definitions
The following table lists the symbols used in this document to denote
certai n co nditio ns:
Symbol Definition
ATTENTION: Identifies information that requires
special consideration
TIP: Identifies advice or hints for the user, often
in terms of performing a task
REFERENCE _ INTERNA L : Identifies an
additional source of information within the
bookset.
Indicates a situation which, if not avoided, may
CAUTION
result in equipment or work (data) on the system
being damaged or lost, or may result in the
inability to properly operate the process.
CAUTION: Indicates a potentially hazardous
situation which, if not avoided, ma y result in minor
or moderate injury. It may also be used to alert
against unsafe practices.
CAUTION: Symbol on the equipment refers the
user to the product manual for additional
information. The symbol appears next to required
information in the manual.
WARNING: Indicates a potentially hazardous
situation which, if not avoided, could result in
serious injury or death.
WARNING symbol on the equipment refers the
user to the product manual for additional
information. The symbol appears next to required
information in the manual.
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IVA-420I User Manual
Contents
INTRODUCTION ............................................................11
Unpacking ............................................................................................. 11
Description ............................................................................................ 11
Installation Guidelines ...........................................................................11
INSTALLATION ..............................................................12
AVAILABLE CONFIGURATIONS ..................................13
Listening Mode ......................................................................................13
Polling Mode .......................................................................................... 14
Split Address Mode ...............................................................................14
Available Configuration for 301C .......................................................15
4-20 mA Configuration ......................................................................16
4-20 mA Output Loop-powered Operation ........................................17
4-20 mA Output Configuration ...........................................................19
WIRING DETAILS ..........................................................20
SPECIFICATIONS ..........................................................21
LED Position and Significance ..........................................................21
4-20 mA Output Adjustments ............................................................21
DIP Switch Settings .................. .... ................................ ... ... .... ... ... .....23
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IVA-420I User Manual
Introduction
Unpacking
After opening the package and removing the equipment and
components, make sure that you have all the items described on the
order form or packing slip.
Installation Guidelines
• Make sure to locate the monitor in an area easily accessible to a
technician.
• Avoid any location where temperature changes occur rapidly.
• Verify all the requirements and existing regulations which may
affect the choice of location.
• Conduit installation must conform to local fire, building and
electrical codes.
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Description
Available Configurations
Description
The unit can be factory set to one of three configurations. In the most
standard configuration, the IVA-420I converts the transmitter digital signal
to 4-20 mA analog outputs.
Although the unit is preconfigured, it is also possible to modify
configurations using the unit’s DIP switch (see Changing the IVA-420I
Configuration section).
Available Configurations
This section provides details on the various IVA-420I configurations
available as well as various wiring diagrams. The IVA-420I converter may
be configured in three modes: Listening, Polling and Split Address.
Listening Mode
In this mode, the IVA-420I only listens to the information transmitted
between the controller and the transmitters. It does not intervene in
network operation. The converter transforms the digital signal from the
transmitters into a 4-20 mA analog sig nal.
Once set, the converter provides a 4-20 mA analog signal for the
transmitters at addresses 1 to 8 or 9 to 16 if the converter is connected
to channel 1 of the 201C, and 17 to 24 or 25 to 32 if the converter is
connected to channel 2.
Each converted signal is associated to a distinct output (J16 through
J23).
Three statistic values are also available: Minimum, Maxim um and
Average, with the appropriate settings. Th ese values are available with
addresses 1 to 8, 9 to 16, or 1 to 16 if the converter is connected to
channel 1 of the 201C , or 17 t o 24, 25 t o 32, or 17 to 32 if the con verter
is connected to channel 2. The outputs associated with the statistic
mode are the following:
Output J20: Average
Output J18: Minimum
Output J16: Maximum
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Description
Available Configurations
Polling Mode
In this mode, the converter polls the network. There is no 201C on the
network. The IVA-420I (master) polls the transmitters (slaves) and converts
the digital signal from the transmitters into a 4-20 mA analog signal.
Once set, the converter provides a 4-20 mA analog signal for the
transmitters at address 1 to 8 or 9 to 16 if the converter is connected to
channel 1 of the 201C, and 17 to 24 or 25 to 32 if the converter is
connected to channel 2. Each converted signal is associated with a
distinct output (J16 thro ugh J23).
Three statistic values are also available : Minimum, Maximum and
Average, with the appropriate settings. These values are available with
addresses 1 to 8, 9 to 16, or 1 to 16 if the converter is connected to
channel 1 of the 201C , or 17 to 24 , 25 to 32, or 17 to 3 2 if the co n verter
is connected to channel 2.
Split Address Mode
(Listening or Polling)
This mode is used with a SQN8x (4 points, 2 gases). The SQN8x uses
4 points per gas. Addresses 1 to 4 a re f or th e first gas a nd addres ses 9
to 12 for th e second gas.
On the IVA-420I, the addresses are fixed. Addresses 1 to 4 are attributed to
the first 4 outputs and addresses 9 to 12 are attributed to the last 4
outputs. This configuration allows for the use of only one IVA-420I with a
SQN8x with two gases.
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Description
Available Configuration for 301C
Available Configuration for 301C
This function is only available with recent versions (2005 onward).
When used with the 301C, it is in listening mode only; the broadcast
mode must be activated on the controller side.
Addresses can be selected in gr oups of 8 (i.e. 1 - 8, 9-16 and so on
until 89-96. See DIP Switch settings for further details). There are also
three (3) statistic values available for select ed groups: Minimum,
Maximum and Average.
Each converted signal is associated to the following outputs;
Output J20: Average;
Output J18: Minimum;
Output J16: Maximum.
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Installation
Mounting Instructions
Installation
Installation of the conv erter simply requires the physical mounti ng of the
enclosure and connection of the power and output lines.
13/32”
6
9/16”
10
Mounting Instructions
1. Select installation location
2. Measure and mark mounting holes (as shown)
3. Pre-drill or prepare as required by mounting surf ace (drywall plugs,
etc.)
4. Position unit and align mounting holes with markings and install
necessary screws.
Note: Remember to remove knock-outs before mounting the unit.
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Wiring Details
4-20 mA Current Sourcing Output Wiring
Wiring Details
4-20 mA Current Sourcing Output Wiring
The transmitter supplies the loop current. The maximum impedance
supported by the loop is 400 ohms. To enable this configuration, the
three jumpers must be placed on positions 1-2, 3-4 and 5-6 at distinct
outputs J16 through J23.
A dedicated power supply must be used with each unit.
WARNING
U31
Considerable damage may occur if this condition is not strictly
met.
U32
U33
U34
S3
S2
S5
S4
U36
U35
S6
U37
U38
S9
S8
S7
J7
J12
P.U.
J8
RC
P.D.
R
E.O.L.
J16
+
1 1111111
-
-
+
J18J17
+
J19
-
+
OUTPUT 1 - 8
-
J21
J22
J20
+
-+
-
J23
-
+
+
+ + + + + + + + -
DDC System
J15
-
SHIELD
+
-
AB
V
V
Power Supply
24 Vac
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Wiring Details
4-20 mA Output Loop-powered Wiring
4-20 mA Output Loop-powered Wiring
(Factory Setting)
The 4-20 mA output is factory set for loop-powered operation and
requires a power source of 12 Vdc to 30 Vdc. The overall permitted
impedance depends on the voltage supplied at the 4-20 mA loop. To
enable this configuration, the three jumpers must be placed on
positions 2-3, 4-5 and 6-7 at distinct outputs J16 through J23.
Permitted Impedance in the 4-20 mA Loop
Voltage Source Applied Total Impedance
12 Vdc 400 Ohms
16 Vdc 600 Ohms
20 Vdc 800 Ohms
24 Vdc 1000 Ohms
30 Vdc 1300 Ohms
3-wire configuration
U32
U31
S2
J16
-
+
+
+ + + + + + + + -
U33
S3
S4
1 1111111
J18J17
-
-
+
U34
S5
J19
-
+
OUTPUT 1 -8
DDC System
U36
U35
S6
J21
J20
+
-
U37
U38
S9
S8
S7
J22
J23
-
-
-+
+
+
J12
P.U.
J15
SHIELD
J8
RC
P.D.
E.O.L.
R
+
-
AB
V
V
- +
DC Power Supply
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Wiring Details
4-20 mA Output Loop-powered Wiring
4-wire configuration
U32
U31
S2
U33
U34
S3
S5
S4
U36
U35
S6
S7
U37
U38
S9
S8
J7
J12
P.U.
E.O.L.
J8
RC
P.D.
R
J16
+
1 1111111
-
-
+
J18J17
+
J19
-
+
OUTPUT 1 - 8
-
+ + + + + + + + -
DDC System
J21
J22
J20
+
-+
-
J23
J15
-
-
+
+
SHIELD
DC Power Supply
AB
V
- +
-
V+
Power
Supply
24 Vac
4-20 mA Output Configuration
The IVA-420I has 8 4-20 mA outputs. It converts a digital signal entering at
J15 into an analog signal through outputs J16 to J23 . The output
signal is linear to the input. The 4 mA output represents the minimum
scale from the input and the 20 mA output represents the maximum
scale from the input.
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PCB Terminals
U4
JP1
1
U2
P1
ADJUST 20mA
ADJUST 4mA
P9
P3
P2
P10
P4
P12
P11
Wiring Details
PCB Terminals
J1
1
U8
C4
S1
P6
P5
P13
P14
PCB420IR8
Made in Canada
508848
P7
P15
C2
P8
U29
P16
C1
PT1
ON
D6
LD5
POWE
SW1
R
LD2
FAULT
P.U.
SHIELD
CHANNEL 1
J7
J12
J15
J8
RC
P.D.
R
E.O.L.
AB
-
+
V
V
C
B
A
U31
J16
+
U32
U33
U34
S3
S2
11111111
J18J17
-
-
+
+
S5
S4
J19
-
-
+
OUTPUT 1 - 8
J20
+
U36
U35
S6
J21
-
U37
U38
S9
S8
S7
J22
J23
-
-
-+
+
+
E
A. Power and Communication: J15 Input: Lower Terminal Output:
Upper Terminal (for communication use 2-24 AWG twisted and
shielded cable , Belden 9841 or equivalent)
B. J8: Pull down resistor
C. J7: 1-2, end of line resistor 2-3, end of line RC filter resistor
D. J12: Pull up resistor
E. 4-20 mA Outputs: J16 to J23 4-20 mA outputs may be set to be
Current sourcing or Loop-powered
Current Sourcing: S2 to S9 jumpers at 1-2, 3-4 and 5-6
Loop-Powered: S2 to S9 jumpers at 2-3, 4-5 and 6-7
When the output reads 3.33mA, the IVA-420I does not see the
corresponding transmitter.
D
WARNING
A dedicated power source must be used with the IVA-420I when
using current sourcing as input 4-20mA configuration.
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Specifications
LED Descriptions
Specifications
Power requirement: 17-27 Vac, 24-38 Vdc, 500 mA
Number of outputs: 8 dedicated 4-20 mA outputs
Operating temperature range: -20 to 50° C (-4° to 122° F)
Operating humidity range: 0% - 95% RN, non-condensing
Communication cable 2-24 AWG twisted and shielded
(Belden 9841 or equivalent)
Dimensions: 8.4 in (H) x 8.6 in (W) x 2.5 in (D)
(21.3 cm x 13,4 cm x 5.7 cm)
Weight: 3.5 lbs (1.58 kg) - with metal housing
Certifications UL1244
CSA C22.2 no.205M1983(R1999)
LED Descriptions
PCB version 6 and before PCB version 7 and up
LED 1: Power LD5: Power
LED 4: Digital to analog signal
(DAC)
LED 5: Micro-controller D6: Communication LED
LD2: Fault
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Specifications
4-20 mA Output Adjustments
4-20 mA Output Adjustments
Before changing the S1 DIP switch settings for the 4-20 mA
adjustments, note the actual setting to reset the dip switch for
normal operation. After the adjustments are made, replace
jumpers at S2 through S9 to the correct configuration.
The outputs must be set for current sourcing configuration. Install
jumpers at positions 1-2, 3-4 and 5-6 for S2 through S9.
WARNING
Do NOT use Current Sourcing Configuration if there will be
voltage on the line.
Set Dipswitch S1 as follows for 4 mA adjustment:
Dip1: OFF Dip2: OFF
Dip3: ON Dip4: OFF
With your ampmeter at each output, adjust the 4 mA with
Potentiometers P9 through P16.
Set Dipswitch S1 as follows for 20 mA adjustment:
Dip1: OFF Dip2: ON
Dip3: ON Dip4: OFF
With your ampmeter at each output, adjust the 20 mA with
potentiometers P1 through P8.
Once completed, replace the settings to their original places.
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Changing the IVA-420I Configuration
DIP Switch Settings
Changing the IVA-420I Configuration
DIP Switch Settings
1234* 5678Mode
0000/10000Interrogation mode; Adr. 9-16
100
010
1100/10000Listen mode; Adr. 1-8
0 0 1 0 0 0 0 0 Output adjustment; 4mA
101
0 1 1 0 0 0 0 0 Output adjustment: 20mA
1110/10000Listen mode; split adr. 1-4, 9-12
001
VULBUS (201C)
011
0/10000Interrogation mode; Adr. 1-8
0/10000Listen mode; Adr 9-16
0/10000
1 0000Interrogation mode; statistic 1-16
1 0000Listen mode; statistic 1-16
Interrogation mode; split adr 1-4,
9-12
0000/11000Modbus listen; Adr. 1-8
000
0000/11100Modbus listen; Adr. 17-24
000
000
0000/10110Modbus listen; Adr. 41-48
000
000
000
000
000
000
000
000
MODBUS (301C)
0000/11111 Not Available
0/10100Modbus listen; Adr. 9-16
0/10010Modbus listen; Adr. 25-32
0/11010Modbus listen; Adr. 33-40
0/11110Modbus listen; Adr. 49-56
0/10001Modbus listen; Adr. 57-64
0/11001Modbus listen; Adr. 65-72
0/10101Modbus listen; Adr. 73-80
0/11101Modbus listen; Adr. 81-88
0/10011Modbus listen; Adr. 89-96
0/11011 Not Available
0/10111 Not Available
Note: * When DIP Switch four (4) is set to 1, it is in statistic mode
(except for adjustment settings)
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