1
Monitoring Relays
Product Description Ordering Key
Housing
Function
Type
Item number
Output
Power supply
Range
• TRMS AC/DC over or under current
monitoring relays
• Current measuring through external shunt or CT
• Selection of measuring range by DIP-switches
• Measuring ranges from 6 to 150 mV AC/DC and
0.4 to 4 V
p
AC (MI or MP range)
• Adjustable current on relative scale
• Adjustable hysteresis on relative scale
• Adjustable delay function (0.1 to 30 s)
• Programmable latching or inhibit at set level
• Output: 8 A SPDT relay N.D. or N.E. selectable
• For mounting on DIN-rail in accordance with
DIN/EN 50 022 (DIB02) or plug-in module (PIB02)
• 22.5 mm Euronorm housing (DIB02)
or 36 mm plug-in module (PIB02)
• LED indication for relay, alarm and power supply ON
• Galvanically separated power supply
Type Selection
Input
Voltage level DIB02: Terminals Y1, Y2
PIB02: Terminals 5, 7
Measuring ranges Internal resis. Max. volt.
6 to 60 mV AC/DC 1 kΩ 2 V
15 to 150 mV AC/DC 1 kΩ 2 V
Max. voltage for 1 s 15 V
0.4 to 4 V
p
AC 50 kΩ 50 V
Max. voltage for 1 s 100 V
MI and MP CT ranges
AAC rms Max. curr.
1-ph.: 3-ph.:
MI 5 MP 3005 0.5 to 5 A 20 AAC
MI 20 MP 3020 2 to 20 A 50 AAC
MI 100 MP 3100 10 to 100 A 250 AAC
MI 500 MP 3500 50 to 500 A 750 AAC
Note:
The input voltage cannot
raise over 300 VAC/DC with
respect to ground (PIB02 only)
1-Phase True RMS AC/DC Over or Under Current
Types DIB02, PIB02
Input Specifications
DIB 02 C B23 150mV
DIB02 and PIB02 are precise
TRMS AC/DC over or under
current (selectable by DIPswitch) monitoring relays.
The current is measured through
an external shunt. 1-phase
and 3-phase current up to
500 AAC can be monitored
connecting MI or MP current
transformers.
Owing to the built-in latch
function, the ON-position of
the relay output can be
maintained. Inhibit function
can be used to avoid relay
operation when not desired
(maintenance, transitions).
The LED's indicate the state
of the alarm and the output
relay.
DIB02
PIB02
Note:
MP3... current transformers
not suitable for under current measurement due to
the output signal of the
device (see data sheet)
Contact input
DIB02 Terminals Z1, Y1
PIB02 Terminals 8, 9
Disabled > 10 kΩ
Enabled < 500 Ω
Latch disable > 500 ms
Input Specifications (cont.)
Mounting Output Supply: 24 VDC Supply: 48 VDC Supply: 24/48 VAC Supply: 115/230 VAC
DIN-rail SPDT DIB 02 C 724 150MV DIB 02 C 748 150MV DIB 02 C B48 150MV DIB 02 C B23 150MV
Plug-in SPDT PIB 02 C 724 150MV PIB 02 C 748 150MV PIB 02 C B48 150MV PIB 02 C B23 150MV
2
DIB02, PIB02
Mode of Operation
DIB02 and PIB02 monitor
both AC and DC over or
under current through an
external shunt.
When connected with MI or
MP current transformer (using
the 0.4 to 4 V
p
range) they
can monitor 1-phase or 3phase AC current up to 500 A.
Example 1
(connection between terminals Z1, Y1 or 8, 9 - latching
function enabled)
The relay operates and latches in operating position
when the measured value
exceeds (or drops below) the
set level for more than the
set delay time.
Provided that the current has
dropped below (or has
exceeded) the set point (see
hysteresis setting), the relay
releases when the interconnection between terminals
Z1, Y1 or 8, 9 is interrupted
or the power supply is interrupted as well.
The red LED flashes until the
delay time has expired or the
measured value comes back
to a non-alarm value (see
hysteresis setting).
Example 2 (MI CT)
(no connection between terminals Z1, Y1 or 8, 9 - latch
function disabled)
The relay operates when the
current flowing in the CT
exceeds (or drops below) the
set level for more than the
set delay time.
It releases when the current
drops below (or exceeds) the
set level (see hysteresis setting) or when power supply
is interrupted.
Example 3 (MP CT)
(no connection between terminals Z1, Y1 or 8, 9 - latch
function disabled - over current measurement)
The relay operates when the
maximum current flowing in
the CT exceeds the set level
for more than the set delay
time.
It releases when the maximum current drops below
the set level (see hysteresis
setting) or when power supply is interrupted.
Note
When the inhibit contact is
opened, if the input signal is
already in alarm position, the
delay time needs to elapse
before relay activation.
Power supply Overvoltage cat. III
Rated operational voltage (IEC 60664, IEC 60038)
through terminals:
A1, A2 or A3, A2 (DIB02)
2, 10 or 11, 10 (PIB02)
724: 24 VDC ± 20%, insulated
748: 48 VDC ± 20%, insulated
B48: 24/48 VAC ± 15%
45 to 65 Hz, insulated
B23: 115/230 VAC ± 15%
45 to 65 Hz, insulated
Dielectric voltage DC supply AC supply
Supply to input 2 kV 4 kV
Supply to output 4 kV 4 kV
Input to output 4 kV 4 kV
Rated operational power
AC 4 VA
DC 3 W
Supply Specifications
Power ON delay 1 s ± 0.5 s or 6 s ± 0.5 s
Reaction time (input signal variation from
-20% to +20% or from
+20% to -20% of set value)
Alarm ON delay < 100 ms
Alarm OFF delay < 100 ms
Accuracy (15 min warm-up time)
Temperature drift ± 1000 ppm/°C
Delay ON alarm ± 10% on set value ± 50 ms
Repeatability ± 0.5% on full-scale
Indication for
Power supply ON LED, green
Alarm ON LED, red (flashing 2 Hz
during delay time)
Output relay ON LED, yellow
Environment (EN 60529)
Degree of protection IP 20
Pollution degree 3 (DIB02), 2 (PIB02)
Operating temperature -20 to 60°C, R.H. < 95%
Storage temperature -30 to 80°C, R.H. < 95%
Housing dimensions
DIn-rail version 22.5 x 80 x 99.5 mm
Plug-in version 36 x 80 x 94 mm
Weight Approx. 150 g
Screw terminals
Tightening torque Max. 0.5 Nm
acc. to IEC 60947
Approvals UL, CSA (except 748)
CE Marking Ye s
EMC
Electromagnetic Compatibillity
Immunity According to EN 61000-6-2
Emission According to EN 61000-6-3
General Specifications
Output SPDT relay
Rated insulation voltage 250 VAC
Contact ratings (AgSnO2)µ
Resistive loads AC 1 8 A @ 250 VAC
DC 12 5 A @ 24 VDC
Small inductive loads AC 15 2.5 A @ 250 VAC
DC 13 2.5 A @ 24 VDC
Mechanical life ≥ 30 x 106operations
Electrical life ≥ 105operations
(at 8 A, 250 V, cos ϕ = 1)
Operating frequency ≤ 7200 operations/h
Dielectric strength
Dielectric voltage
≥ 2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
Output Specifications
3
DIB02, PIB02
Function/Range/Level and Time Delay Setting
Adjust the measuring range setting the DIP switches 1 and 2
and select the desired function
setting the DIP switches 3 to 6
as shown below.
To access the DIP switches
open the grey plastic cover as
shown below.
Selection of level and time
delay:
Upper knob:
Setting of hysteresis on relative scale: 0 to 30% on set
value.
Centre knob:
Current level setting on relative scale: 10 to 110% on full
scale.
Lower knob:
Setting of delay on alarm time
on absolute scale (0.1 to 30 s).
Example 1
Example 2
Example 3
L
N(-)
PE
Z1
Y1
Y2
A1 A3
A2 15
16 18
I
L
N(-)
PE
Z1
Y1
Y2
A1 A3
A2 15
16 18
I
L
N(-)
PE
Z1
Y1
Y2
A1 A3
A2 15
16 18
I
24 VDC (+)
48/230 VAC
24/115 VAC
24 VDC (+)
48/230 VAC
24/115 VAC
24 VDC (+)
48/230 VAC
24/115 VAC
Latch/Inhibit
enable
Example 1
Example 2
Example 3
L
N(-)
PE
µ
5
7
10 1
43
1
43
1
43
I
89
L
N(-)
PE
µ
5
7
10
I
89
L
N(-)
PE
µ
5
7
I
89
24 VDC (+)
48/230 VAC
24/115 VAC
112
24 VDC (+)
48/230 VAC
24/115 VAC
112
24 VDC (+)
48/230 VAC
24/115 VAC
112
Latch/Inhibit
enable
10
Wiring Diagrams
DIB02 PIB02
Measuring range
ON ON: 6 to 60 mV AC/DC
OFF ON: 15 to 150 mV AC/DC
ON OFF: 0.4 to 4 V
p
Relay working mode
ON: Normally De-Energized
OFF: Normally Energized
Power ON delay
ON: 6 s ± 0.5 s
OFF: 1 s ± 0.5 s
Contact input
ON: Latch function enable
OFF: Inhibit function enable
Monitoring function
ON: Over current
OFF: Under current
µ
24/48 VDC (+)
24/48 VDC (+)
24/48 VDC (+)
24/48 VDC (+)
24/48 VDC (+)
24/48 VDC (+)
µ
µ
4
Operation Diagrams
Power supply
Over current Under current - Latch function
Under current
Power supply
Latch ON
Set Level
Relay ON
Red LED ON
Set Level
Relay ON
Red LED ON
Power supply
Red LED ON
Set Level
Hysteresis
Hysteresis
Hysteresis
Relay ON
1 or 6 s
1 or 6 s
Over current - Inhibit function
Power supply
Inhibit ON
Set Level
Relay ON
Red LED ON
Hysteresis
1 or 6 s
1 or 6 s
DIB02, PIB02
Over current - N.D. relay
Under current - N.D. relay
Under current - Latch function - N.D. relay
Over current - Inhibit function - N.D. relay
36
80
94
28.5
63
90
22.5
80
83.5
99.5
63
28.5
Dimensions
DIN-rail
Plug-in
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