CONTROLS
CONTROLS
EUS
CONTROL RELAY
SERIES
and EUSF
VOLTAGE
UL cUL listed
•
•
•
•
Units Check Their Own Supply Voltage Level
EUS SERIES – Over or Under Voltage Selectable
EUSF SERIES – Monitors High and Low Voltage
Space Saving 22.5mm Wide – DIN-Rail / Surface Mount
MODE OF OPERATION:
EUS
VOLTAGE CONTROL WITHOUT MEMORY
Un
OPERATING PRINCIPLE:
EUS SERIES
Control of AC / DC voltage without memory
When the value of the controlled voltage, AC or DC, reaches the threshold
Ue displayed on the front face, the output relay changes state at the end of
a time delay T which can be set on the front face at between 0.1 and 3 s.
Once the voltage drops below 5 to 50% of the threshold (hysteresis), the
output relay changes state again instantly. Changing the hysteresis on the
front face does not therefore modify the value of the preset threshold.
Control of AC / DC voltage with memory
When the value of the controlled voltage, AC or DC, reaches the threshold
Ue displayed on the front face, the output relay changes state at the end of
a time delay T which can be set on the front face at between 0.1 and 3 s,
and stays locked in this position.
EUSF SERIES
The EUSF window threshold relay monitors an electrical voltage which acts
as its own power supply (simplified wiring). When the value of the controlled
voltage, AC or DC, goes outside the window, the output relay deenergises at
the end of a time delay T which can be set on the front face at between 0.1
and 3 s.
It switches back on when the voltage returns within the window and stays
between the upper and lower thresholds displayed by two potentiometers
on the front face. Fixed hysteresis ensures bounce-free relay switching
around the thresholds.
Note:
Time delay T1 on crossing the upper and lower thresholds offers immunity to transient
phenomena, thus preventing spurious triggering of the output relay.
Unit power-up
Threshold Ue
Hysteresis
T1
Controlled voltage
UPPER function
Controlled voltage
Hysteresis
Threshold Ue
T1
5
UNDER function
EUS
VOLTAGE CONTROL WITH MEMORY
Un
Unit power-up
Threshold Ue
Hysteresis
T1
memory
Controlled voltage
UPPER function
Controlled voltage
Hysteresis
Threshold Ue
T1
memory
UNDER function
Un
EUSF
Unit power-up
SPECIFICATIONS:
Input power.
. . . . . . . . . . . . . . . . . . . . . . .
EUS:
EUSF:
12 VDC,
—
20 to 80 VAC/VDC 20 to 80 VAC/VDC
90 to 270 VAC/VDC 90 to 270 VAC/VDC
3.5 VA
50/60 Hz
EUS:
EUSF:
9.6 to 15.6 VDC
—
20 to 80 VAC/VDC 20 to 80 VAC/VDC
65 to 260 VAC/VDC 65 to 260 VAC/VDC
EUS:
EUSF:
5 to 20% Adjustable
Fixed at 5%
±10% of full scale
.1 to 3 sec.
SPDT relay
AgCdO
8 Amp resistive
250 VAC
-4°F to 140°F, (-20°C to 60°C)
-22°F to 158°F, (-30°C to 70°C)
4.9 oz. (140g)
High threshold
Low threshold
T1
T1
Hysteresis
Controlled
voltage
Hysteresis
Max. power consumption
. . . . . . . . . . . .
Frequency of measured signal.
. . . . . . .
Threshold value
. . . . . . . . . . . . . . . . . . . .
WIRING:
A1 11
11
Hysteresis.
. . . . . . . . . . . . . . . . . . . . . . . .
Display accuracy
. . . . . . . . . . . . . . . . . . .
Delay on threshold overun
. . . . . . . . . . .
Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact material.
. . . . . . . . . . . . . . . . . . .
Maximum loading.
. . . . . . . . . . . . . . . . . .
Maximum switching voltage
. . . . . . . . . .
Operating temperature
. . . . . . . . . . . . . .
Storage temperature
. . . . . . . . . . . . . . . .
Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 12 A2
12
14
A1 & A2 power supply
.17˝
(4.2)
DIMENSIONS:
inches (mm)
2.25˝ (57)
3.10˝ (78.5)
3.53˝ (89.7)
ORDERING INFORMATION:
Part Number
84 872 040
84 872 046
84 872 047
84 872 056
84 872 057
Type
EUS
EUS
EUS
EUSF
EUSF
Supply Voltage
12 VDC
20 to 80 VAC/VDC
90 to 270 VAC/VDC
20 to 80 VAC/VDC
90 to 270 VAC/VDC
.14˝
(3.5)
2.84˝ (72)
3.94˝ (100)
.20˝
(5)
(22.5)
.89˝
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
5-25
3.92˝ (99.3)
LED Zone
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