CONTROLS CONTROLS
Products and specifications subject to change without notice.
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
EI SERIES
CURRENT CONTROL RELAY
UL cUL listed
• 3 Product Types for Measurement Accuracy
• Under or Over Current - Selectable
• Space Saving 22.5mm Wide
• DIN-Rail / Surface Mount
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)
14 12
A1 11
11
M
A2
E1 E2 E3 12 14
~
~A1&A2 power supply
14 12
A1 11
11
M
A2
E1 E2 E3 12 14
~
~A1&A2 power supply
26 852 304
transformer
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.
PART NUMBER FOR ORDERING
Type EIL EIH EIT
Measurement
10 to 100 A
range
2 to 500 mA 0.1 to 10 A with current
Supply voltage transformer
24 VDC 84 871 020 84 871 030 84 871 040
24 VAC 84 871 021 84 871 031 84 871 041
48 VAC 84 871 022 84 871 032 84 871 042
120 VAC 84 871 023 84 871 033 84 871 043
230 VAC 84 871 024 84 871 034 84 871 044
Current transformer 26 852 304
Un
T2 T1
T2 T1
T2
T2
T1
T1
Un
T1 T2
T2T1
T2 T1
T2 T1
Threshold I
Hysteresis
Unit power-up
UPPER function
Hysteresis
Threshold I
Hysteresis
Hysteresis
Controlled current
Controlled current
Unit power-up
Hysteresis
Hysteresis
Controlled current
Controlled current
UNDER function
WIRING DIAGRAM
EIL EIH
WIRING DIAGRAM
EIT
Threshold I
Hysteresis
UPPER function
Hysteresis
Threshold I
❶
❶❶memory
UNDER function
AC/DC CONTROL WITH MEMORY
AC/DC CONTROL WITHOUT MEMORY
3.10˝ (78.5)
3.53˝ (89.7)
3.92˝ (99.3)
(22.5)
(4.2)
.17˝
(57)2.25˝
(5)
(3.5)
.14˝
.20˝
2.84˝
3.94˝ (100)
(72)
.89˝
DIMENSIONS: inches (mm)
Transformer
ref. 26 852 304
(39)
(38)
Ø(.13)
(20)
.51˝
.78˝
1.50˝
1.50˝
2 tag connectors Ø (6.35)
Types EIL EIH EIT
Inputs E1-M E2-M E3 M E1-M E2-M E3 M E1-M
Measurement Sensitivity 2 to 10 to 50 to .01 to .5 to 1 to 10 to
range 20 mA 100 mA 500 mA 1 A 5 A 10 A 100 A
Input 5 Ω1 Ω0.2 Ω0.1 Ω0.02 Ω0.01 Ω20 Ω
resistance
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
