CONTROLS
CONTROLS
EI SERIES
UL cUL listed
CURRENT CONTROL RELAY
•
•
•
•
3 Product Types for Measurement Accuracy
Under or Over Current - Selectable
Space Saving 22.5mm Wide
DIN-Rail / Surface Mount
Three product types; EIL (2 to 500 mA), EIH (.1 to 10A) and EIT (10 to 100A with
current transformers) provide selectable over or under current control.
AC/DC control without memory.
When the value of the controlled current, either AC or DC, reaches the threshold
displayed on the front face, the output relay change state at the end of time delay T1.
It returns to the initial state instantly when the current drops below the hysteresis
threshold, or when the power supply is disconnected.
AC/DC control with memory.
When the value of the controlled current reaches the displayed threshold, the output relay
changes status at the end of time period T1 and remains locked in this position. To reset
the memory function the auxiliary supply must be disconnected.
Over-current function (UPPER).
The power-on time delay T2 prevents current peaks due to motor starting.
The delay on upward crossing of threshold T1 provides immunity to transients and other
interference, thereby preventing spurious triggering of the output relay.
Under-current function (UNDER).
The power-on delay T2 prevents the occurrence of current troughs. The delay on
downward crossing of threshold T1 provides immunity to random dips, thereby preventing
spurious triggering of the output relay.
Note:
In underload function, the absolute value of the hysteresis
cannot be greater than the measurement range maximum.
Un
AC/DC CONTROL WITH MEMORY
Unit power-up
Controlled current
Threshold I
Hysteresis
UPPER function
Hysteresis
Threshold I
Hysteresis
T2
T1
❶
T2
T1
T2
T1
UNDER function
❶
T2
T1
Hysteresis
Controlled current
❶
memory
Un
AC/DC CONTROL WITHOUT MEMORY
Unit power-up
Controlled current
SPECIFICATIONS:
Input power
. . . . . . . . . . . . . . . . . . . . . . . . . . . 24 VDC, 24, 110 to 230 VAC
±15%, 50/60 Hz
Power Consumption
. . . . . . . . . . . . . . . . . . . . 3 VA
Hysteresis Selection
. . . . . . . . . . . . . . . . . . . . 5 to 50% of Displayed Threshold
Threshold Value
. . . . . . . . . . . . . . . . . . . . . . . 10 to 100% of Measurement Range
Setting Accuracy-Threshold.
. . . . . . . . . . . . . ±10%
Repeat Accuracy.
. . . . . . . . . . . . . . . . . . . . . . ±0.1% with constant parameters
Voltage drift.
. . . . . . . . . . . . . . . . . . . . . . . . . . ±0.1% (±10% of input voltage)
Temperature drift
. . . . . . . . . . . . . . . . . . . . . . ±0.02%
Power up delay T2.
. . . . . . . . . . . . . . . . . . . . . 1 s to 20 s, ±30%
Delay on threshold overrun T1
. . . . . . . . . . . . 0.1 s to 3 s, ±20%
Output relay
. . . . . . . . . . . . . . . . . . . . . . . . . . SPDT Relay
Contact Material
. . . . . . . . . . . . . . . . . . . . . . . AgCdO
Maximum Loading
. . . . . . . . . . . . . . . . . . . . . 8A AC resist
Operating temperature
. . . . . . . . . . . . . . . . . . to 140°F, -20°C to 60°C
Storage temperature
. . . . . . . . . . . . . . . . . . . . -30°C to 70°C
Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (140g)
Types
Inputs
Sensitivity
Input
resistance
EIL
E1-M
E2-M
E3 M
E1-M
Threshold I
Hysteresis
T2
T1
T1
T2
Hysteresis
UPPER function
Controlled current
Hysteresis
Threshold I
T2
T1
T1
T2
Hysteresis
UNDER function
~
WIRING DIAGRAM
EIL EIH
~
11
WIRING DIAGRAM
EIT
A1 11 M
26 852 304
transformer
11
A1 11 M
E1 E2 E3
14 12 A2
E1 E2 E3
12
14
14 12 A2
12
14
~
~
A1&A2 power supply
A1&A2 power supply
EIH
E2-M
E3 M
EIT
E1-M
DIMENSIONS:
inches (mm)
.17˝
(4.2)
5
Ω
1
Ω
0.2
Ω
0.1
Ω
0.02
Ω
0.01
Ω
20
Ω
.14˝
(3.5)
Note:
24VDC input power version. The input voltage and the measured current must be from separate sources.
The “negative” poles of the auxiliary power supply and the measurement circuit are connected inside the unit
PART NUMBER FOR ORDERING
Type
EIL
Measurement
range
2 to 500 mA
Supply voltage
24 VDC
84 871 020
24 VAC
84 871 021
48 VAC
84 871 022
120 VAC
84 871 023
230 VAC
84 871 024
Current transformer
EIH
2.84˝ (72)
3.94˝ (100)
.20˝
(5)
(22.5)
.89˝
EIT
10 to 100 A
0.1 to 10 A
with current
transformer
Transformer
84 871 030
84 871 040
ref. 26 852 304
84 871 031
84 871 041
84 871 032
84 871 042
84 871 033
84 871 043
84 871 034
84 871 044
26 852 304
Products and specifications subject to change without notice.
2 tag connectors
Ø (6.35)
1.50˝
(39)
.51˝
Ø(.13)
3.10˝ (78.5)
3.53˝ (89.7)
(38)
1.50˝
(20)
.78˝
Consult factory for application assistance.
204 Airline Drive, Suite 300, Coppell, Texas 75019 / Tel: (800) 677-5311 / FAX: (800) 677-3865 / www.crouzet-usa.com
5-20
3.92˝ (99.3)
2.25˝ (57)
Measurement
range
2 to
10 to 50 to .01 to
20 mA 100 mA 500 mA 1 A
.5 to
5A
1 to
10 A
10 to
100 A
Embedded System
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EEWORLD
