Contrel RI-R44 Insulation monitoring device Owner's Manual
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RI-R44 / RI-R44-485 instruction manual IM828-U v0.5 pag. 1 / 4
INSTRUCTION MANUAL
IM828-U v0.5
RI-R44 / RI-R44-485 INSULATION CONTROL RELAY
Introduction
RI-R44 (-485) is a device that allows the insulation monitoring to earth of AC networks up to 440V isolated (IT
systems). By applying a DC component measure signal between the insulated line and earth it’s possible to control
the insulation resistance by detecting the generated leakage current.
The TRIP (red) and ALARM (yellow) LED are used to identify the status of the instrument:
- Yellow LED turned on indicates an insulation lower than the Alarm threshold but higher than the Trip threshold
- Red LED turned on and relay activated indicate an insulation lower than the Trip threshold
The Trip threshold can be set by dip-switch while the Alarm threshold is set, for default, at 200% of Trip threshold
(via communication port it’s possible to modify it).
Via switch is possible to select the automatic or manual (with frontal button) RESET.
If the measured value is higher than TRIP threshold and lower than ALARM threshold, a RESET, after a TRIP
status, will deactivate the relay and will turn off the red led while the yellow led will remain turned on.
WARNING!
Read carefully the manual before the installation.
These instruments must be installed by qualified personnel to avoid damage to persons or things.
Disconnect the power supply before to work on the instrument.
The manufacturer has not responsibility for electrical safety in the event of improper use of the device.
Description
DIN modular box (2 modules)
Micro-switches for settings (threshold, operation mode, serial communication)
On the front panel, TEST and RESET button
Output relay to signal tripping (TRIP)
3 LED (ON/DATA, TRIP, ALARM)
RS485 interface communication (RI-R44-485 version)
Main functions
WARNING: It is advisable to make the choice of functionality (setting switches) with instrument not supplied in
order to avoid dangerous situations in the transition from one to another mode.
RI-R44 model Functionality: RI-R44-485 model
[1] Threshold of TRIP relay
[2] Enabling FAIL SAFE
[3] Reset mode
[4] Validation tripping time of the TRIP
relay
[5] Baud rate of the communication port
[6] Address of the instrument
[7] Led ON/DATA
[8] Led TRIP
[9] Led ALARM
[10] TEST button
[11] RESET button
1
3
2
4
7
9
8
10
11
TRIP
ALARM
ON
ON‐FAIL SAFEOFF
AUTO‐RESETMAN
0 5 sec.‐DELAY
0 1
0=300
1=150
2=100
3=50
4=30
5=10
6=5
7=1
4
2
1
INSULATION
TEST
RESET
k
RI-R44
Insulation
Monitoring
TRIP
ALARM
ON
DATA
ON ‐FAIL SAF EOF F
AUT O ‐RE SETMAN
0 5 sec. ‐DE LAY
0 1
0=300
1=150
2=100
3=50
4=30
5=10
6=5
7=1
4
2
1
0=INT
1=1
2=2
.. .=...
15=15
0=9, 6
1=19,2
2=38,4
3=57,6
0 1
NO DE ID BAUD RATE
2
1
8
4
2
1
IN SUL AT ION
kbps TEST
RESET
k
{
1
3
2
4
{
{
{
{5
6 {
7
9
8
10
{
{
11
{
{
{
INSTRUCTION MANUAL
IM828-U v0.5
RI-R44 / RI-R44-485 INSULATION CONTROL RELAY
Introduction
RI-R44 (-485) is a device that allows the insulation monitoring to earth of AC networks up to 440V isolated (IT
systems). By applying a DC component measure signal between the insulated line and earth it’s possible to control
the insulation resistance by detecting the generated leakage current.
The TRIP (red) and ALARM (yellow) LED are used to identify the status of the instrument:
- Yellow LED turned on indicates an insulation lower than the Alarm threshold but higher than the Trip threshold
- Red LED turned on and relay activated indicate an insulation lower than the Trip threshold
The Trip threshold can be set by dip-switch while the Alarm threshold is set, for default, at 200% of Trip threshold
(via communication port it’s possible to modify it).
Via switch is possible to select the automatic or manual (with frontal button) RESET.
If the measured value is higher than TRIP threshold and lower than ALARM threshold, a RESET, after a TRIP
status, will deactivate the relay and will turn off the red led while the yellow led will remain turned on.
WARNING!
Read carefully the manual before the installation.
These instruments must be installed by qualified personnel to avoid damage to persons or things.
Disconnect the power supply before to work on the instrument.
The manufacturer has not responsibility for electrical safety in the event of improper use of the device.
Description
DIN modular box (2 modules)
Micro-switches for settings (threshold, operation mode, serial communication)
On the front panel, TEST and RESET button
Output relay to signal tripping (TRIP)
3 LED (ON/DATA, TRIP, ALARM)
RS485 interface communication (RI-R44-485 version)
Main functions
WARNING: It is advisable to make the choice of functionality (setting switches) with instrument not supplied in
order to avoid dangerous situations in the transition from one to another mode.
RI-R44 model Functionality: RI-R44-485 model
[1] Threshold of TRIP relay
[2] Enabling FAIL SAFE
[3] Reset mode
[4] Validation tripping time of the TRIP
relay
[5] Baud rate of the communication port
[6] Address of the instrument
[7] Led ON/DATA
[8] Led TRIP
[9] Led ALARM
[10] TEST button
[11] RESET button
1
3
2
4
7
9
8
10
11
TRIP
ALARM
ON
ON‐FAIL SAFEOFF
AUTO‐RESETMAN
0 5 sec.‐DELAY
0 1
0=300
1=150
2=100
3=50
4=30
5=10
6=5
7=1
4
2
1
INSULATION
TEST
RESET
k
RI-R44
Insulation
Monitoring
TRIP
ALARM
ON
DATA
ON ‐FAIL SAF EOF F
AUT O ‐RE SETMAN
0 5 sec. ‐DE LAY
0 1
0=300
1=150
2=100
3=50
4=30
5=10
6=5
7=1
4
2
1
0=INT
1=1
2=2
.. .=...
15=15
0=9, 6
1=19,2
2=38,4
3=57,6
0 1
NO DE ID BAUD RATE
2
1
8
4
2
1
IN SUL AT ION
kbps TEST
RESET
k
{
1
3
2
4
{
{
{
{5
6 {
7
9
8
10
{
{
11
{
{
{
RI-R44 / RI-R44-485 instruction manual IM828-U v0.5 pag. 2 / 4
Threshold of TRIP relay – Micro-switches group [1]
Micro-switch 4 Micro-switch 2 Micro-switch 1 Trip threshold (kΩ)
0 0 0 300
0 0 1 150
0 1 0 100
0 1 1 50
1 0 0 30
1 0 1 10
1 1 0 5
1 1 1 1
Enable FAIL SAFE – Micro-switch [2]
OFF = fail safe disabled.
TRIP relay normally de-energized.
ON = fail safe enabled.
TRIP relay normally energized.
Reset mode - Micro-switch [3]
MAN = manual reset with frontal button. AUTO-RESET = automatic reset.
Validation tripping time of the TRIP relay - Micro-switch [4]
0 = typical tripping time 1÷2,5 sec. 5sec = typical tripping time plus 5 seconds.
In the time selected the insulation value must remain below the threshold value set.
Baud rate of the communication port - Micro-switches group [5] (only for RI-R44-485)
Micro-switch 2 Micro-switch 1 Baud rate serial port (bps)
0 0 9600
0 1 19200
1 0 38400
1 1 57600
Address of the instrument - Micro-switches group [6] (only for RI-R44-485)
Micro-switch 8 Micro-switch 4 Micro-switch 2 Micro-switch 1 Serial address node
0 0 0 0 parametri da memoria
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
….
1 1 1 1 15
ON/DATA LED [7]: It indicates the presence of the auxiliary power supply and the eventual activity on the Modbus
RTU communication interface (the led switch off for a short time to each answer from the device).
TRIP LED [8]: If it’s turned on indicates an insulation level lower than the threshold set and the tripping of the TRIP
relay.
ALARM LED [9]: The light turned on and fixed indicates an insulation level under the alarm threshold (default:
200% of the TRIP threshold). If the light flashes, it indicates an insulation higher than the maximum measureable
(function normally disabled and that can be activated by the communication port).
TEST button [10]: The pressure of the key for 2/3 seconds simulates an insulation value equal to 0 for a time of
approximately 3 seconds in the way to test the functioning of the instrument (switching on the red and yellow LED;
tripping relay).
RESET button [11]: It is used for resetting the relay after the tripping and for the turning off of the alarm visual
signals.
Threshold of TRIP relay – Micro-switches group [1]
Micro-switch 4 Micro-switch 2 Micro-switch 1 Trip threshold (kΩ)
0 0 0 300
0 0 1 150
0 1 0 100
0 1 1 50
1 0 0 30
1 0 1 10
1 1 0 5
1 1 1 1
Enable FAIL SAFE – Micro-switch [2]
OFF = fail safe disabled.
TRIP relay normally de-energized.
ON = fail safe enabled.
TRIP relay normally energized.
Reset mode - Micro-switch [3]
MAN = manual reset with frontal button. AUTO-RESET = automatic reset.
Validation tripping time of the TRIP relay - Micro-switch [4]
0 = typical tripping time 1÷2,5 sec. 5sec = typical tripping time plus 5 seconds.
In the time selected the insulation value must remain below the threshold value set.
Baud rate of the communication port - Micro-switches group [5] (only for RI-R44-485)
Micro-switch 2 Micro-switch 1 Baud rate serial port (bps)
0 0 9600
0 1 19200
1 0 38400
1 1 57600
Address of the instrument - Micro-switches group [6] (only for RI-R44-485)
Micro-switch 8 Micro-switch 4 Micro-switch 2 Micro-switch 1 Serial address node
0 0 0 0 parametri da memoria
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
….
1 1 1 1 15
ON/DATA LED [7]: It indicates the presence of the auxiliary power supply and the eventual activity on the Modbus
RTU communication interface (the led switch off for a short time to each answer from the device).
TRIP LED [8]: If it’s turned on indicates an insulation level lower than the threshold set and the tripping of the TRIP
relay.
ALARM LED [9]: The light turned on and fixed indicates an insulation level under the alarm threshold (default:
200% of the TRIP threshold). If the light flashes, it indicates an insulation higher than the maximum measureable
(function normally disabled and that can be activated by the communication port).
TEST button [10]: The pressure of the key for 2/3 seconds simulates an insulation value equal to 0 for a time of
approximately 3 seconds in the way to test the functioning of the instrument (switching on the red and yellow LED;
tripping relay).
RESET button [11]: It is used for resetting the relay after the tripping and for the turning off of the alarm visual
signals.
RI-R44 / RI-R44-485 instruction manual IM828-U v0.5 pag. 3 / 4
Wiring connection
Auxiliary power supply
Power supply is connected to terminals (6) and (7).
Relay output
Relay output to the terminals (3), (4) and (5). Contacts rated 5A 250VAC.
Communication interface
The RS485 serial interface with Modbus RTU protocol communication is connected to the terminals (9), (10) e (11).
Insulation monitoring
The earth or the protection conductor, the reference of measure, is connected to PE terminal (2).
The terminal Vc (1) is connected to neutral or to a phase of the line to control (max 24÷440Vac +10%).
N.B.: In the RI-R44 connection the terminals 9-10-11 (serial port) are not available.
*Only for RI-R44-485
TRIP
ALARM
ON
DATA
ON‐FAIL SAFEOFF
AUTO‐RESETMAN
0 5 sec.‐DELAY
0 1
0=300
1=150
2=100
3=50
4=30
5=10
6=5
7=1
4
2
1
0=INT
1=1
2=2
...=...
15=15
0=9,6
1=19,2
2=38,4
3=57,6
0 1
NODE ID BAUD RATE
2
1
8
4
2
1
INSULATION
kbps TEST
RESET
k
Auxiliary
power supply *R 485S
Aux1
Aux2
C
B-
A+
Vc
PE
NO
Com
NC
Insulation
monitoring
Relay
output
RI-R44-485
Insulation
Tester
Output
Relay
Vaux RS485
RS485Vaux
PE
N
L
Load
Vc PE NO Com NC
Aux1 Aux2 +A-BC
RI-R44-485
Insulation
Tester
Output
Relay
Vaux RS485
RS485Vaux
PE
N
L3
L2
L1
Load
Vc PE NO Com NC
Aux1 Aux2 +A-BC
Three-phase connection
Single-phase connection
Wiring connection
Auxiliary power supply
Power supply is connected to terminals (6) and (7).
Relay output
Relay output to the terminals (3), (4) and (5). Contacts rated 5A 250VAC.
Communication interface
The RS485 serial interface with Modbus RTU protocol communication is connected to the terminals (9), (10) e (11).
Insulation monitoring
The earth or the protection conductor, the reference of measure, is connected to PE terminal (2).
The terminal Vc (1) is connected to neutral or to a phase of the line to control (max 24÷440Vac +10%).
N.B.: In the RI-R44 connection the terminals 9-10-11 (serial port) are not available.
*Only for RI-R44-485
TRIP
ALARM
ON
DATA
ON‐FAIL SAFEOFF
AUTO‐RESETMAN
0 5 sec.‐DELAY
0 1
0=300
1=150
2=100
3=50
4=30
5=10
6=5
7=1
4
2
1
0=INT
1=1
2=2
...=...
15=15
0=9,6
1=19,2
2=38,4
3=57,6
0 1
NODE ID BAUD RATE
2
1
8
4
2
1
INSULATION
kbps TEST
RESET
k
Auxiliary
power supply *R 485S
Aux1
Aux2
C
B-
A+
Vc
PE
NO
Com
NC
Insulation
monitoring
Relay
output
RI-R44-485
Insulation
Tester
Output
Relay
Vaux RS485
RS485Vaux
PE
N
L
Load
Vc PE NO Com NC
Aux1 Aux2 +A-BC
RI-R44-485
Insulation
Tester
Output
Relay
Vaux RS485
RS485Vaux
PE
N
L3
L2
L1
Load
Vc PE NO Com NC
Aux1 Aux2 +A-BC
Three-phase connection
Single-phase connection
RI-R44 / RI-R44-485 instruction manual IM828-U v0.5 pag. 4 / 4
Dimensions (mm)
Technical features
Auxiliary power supply
Voltage supply range 230VAC ±20%
115VAC ±20% (optional)
Frequency range 50 – 60Hz
Power consumption 2VA max
Control circuit
Voltage of the line under control 24 ÷ 440 Vac +10% (MAX 630V on three-phase line with neutral)
Test mode Apply the DC voltage test
Voltage’s measure 13VDC max
Current’s measure 15µA DC max
Internal impedance 350kΩ
Threshold trip 300-150-100-50-30-10-5-1 KΩ
Delay trip Dip Delay = 0: 1÷2,5s
Dip Delay = 5: 6÷7,5s
Output relay
Relay status Normally de-energized (Fail Safe OFF)
Configuration contacts 1 changeover contact SPDT (NO, C, NC)
Maximum load user outputs 5A – 250 VAC
Visualizations
Green LED (ON) Turned on fixed = instrument powered
Flashing = active communication
Red LED On = TRIP (tripping relay)
Yellow LED On = ALARM
Insulation
Insulation test 2,5kV for 1 minute
RS485 serial interface
Baud-rate Programmable from dip switch 9600-57600 bps
Programmable from Modbus 4800-115200 bps
Data
8 bit, no parity, 1 stop bit (default)
8 bit, odd
8 bit, even
Stop bit 1-2 (1 default)
Environment condition of functioning
Working temperature -10÷60°C
Storing temperature -20÷80°C
Relative Humidity ≤ 90%
Case
Execution 2 DIN modules
Protection’s degree Enclosure and terminals: IP20 – Frontal with cover: IP40
Weight 200g
Standard
Standard reference
IEC/EN 61010-1
IEC/EN 61557-8
IEC/EN 61326-1
Dimensions (mm)
Technical features
Auxiliary power supply
Voltage supply range 230VAC ±20%
115VAC ±20% (optional)
Frequency range 50 – 60Hz
Power consumption 2VA max
Control circuit
Voltage of the line under control 24 ÷ 440 Vac +10% (MAX 630V on three-phase line with neutral)
Test mode Apply the DC voltage test
Voltage’s measure 13VDC max
Current’s measure 15µA DC max
Internal impedance 350kΩ
Threshold trip 300-150-100-50-30-10-5-1 KΩ
Delay trip Dip Delay = 0: 1÷2,5s
Dip Delay = 5: 6÷7,5s
Output relay
Relay status Normally de-energized (Fail Safe OFF)
Configuration contacts 1 changeover contact SPDT (NO, C, NC)
Maximum load user outputs 5A – 250 VAC
Visualizations
Green LED (ON) Turned on fixed = instrument powered
Flashing = active communication
Red LED On = TRIP (tripping relay)
Yellow LED On = ALARM
Insulation
Insulation test 2,5kV for 1 minute
RS485 serial interface
Baud-rate Programmable from dip switch 9600-57600 bps
Programmable from Modbus 4800-115200 bps
Data
8 bit, no parity, 1 stop bit (default)
8 bit, odd
8 bit, even
Stop bit 1-2 (1 default)
Environment condition of functioning
Working temperature -10÷60°C
Storing temperature -20÷80°C
Relative Humidity ≤ 90%
Case
Execution 2 DIN modules
Protection’s degree Enclosure and terminals: IP20 – Frontal with cover: IP40
Weight 200g
Standard
Standard reference
IEC/EN 61010-1
IEC/EN 61557-8
IEC/EN 61326-1
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