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7November2022/Version 6
LEM reserves the right to carry out modifications on its transducers,
in order to improve them.
LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
www.lem.com
ITZ 2000-SBPR FLEX ULTRASTAB
In case diagram A, the following table shows how each individual output signal acts:
Output signal
U
out
Description
OVERLOAD
< 0.2 V
The transducer head is saturated due to excessive primary current
+
U
C
The transducer head is not saturated
High
I
P
< 0.2 V The primary current is higher than 105 % of nominal full-scale output
+
U
C
The primary current is lower than 105 % of nominal full-scale output
ACTIVE
< 0.2 V
The primary current is higher than approximately 1 % of nominal full-scale output
+
U
C
The primary current is lower than approximately 1 % of nominal full-scale output
STATUS
< 0.2 V When the unit status is OK (Normal operation)
+
U
C
When the unit status is not OK (Supply fault, over-temperature conditions and Current
overloads or No detected head)
In case diagram B, the following table shows how each individual output signal acts:
Output signal
U
out
Description
OVERLOAD
+
U
C
The transducer head is saturated due to excessive primary current
< 0.2 V The transducer head is not saturated
High
I
P
+
U
C
The primary current is higher than 105 % of nominal full-scale output
< 0.2 V The primary current is lower than 105 % of nominal full-scale output
ACTIVE
+
U
C
The primary current is higher than approximately 1 % of nominal full-scale output
< 0.2 V
The primary current is lower than approximately 1 % of nominal full-scale output
STATUS
+
U
C
When the unit status is OK (Normal operation)
< 0.2 V When the unit status is not OK (Supply fault, over-temperature conditions and Current
overloads or No detected head)
The power supply v
U
C
must be between 4 V and 60 V DC and the resistor value must be chosen between a minimum
value
R
min
and a maximum value
R
max
calculated by using the following equations:
Some recommended standard values of
R
are given in the following table:
Power supply v
U
C
R
min
(kΩ)
R
max
(kΩ)
R
Standards values ± 5 %
5 V
1.5
3
1.8 kΩ or 2.2 kΩ
12 V
3.5
7
4.7 kΩ or 6.8 kΩ
24 V
7
14
10 kΩ or 12 kΩ
Absolute maximum ratings
Parameter
Symbol
Specification
Unit
Power supply voltage
+
U
C
60
V
Maximum Collector-Emitter Voltage, Off-state
U
C E off max
60
V
Maximum reverse Collector-Emitter Voltage, Off-state
U
C E off max
5
V
Maximum Collector-Emitter Current, On-state
I
C E ON max
10
mA
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the status/interlock signal outputs.
R
min
(k
Ω
Ω
)
=
+
U
C
U
C
3
1.7
.4
and
R
(k )
=
+
max
