MONITORING RELAYS - FIBER - #9

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Text version of the page
Under voltage monitoring relay with fixed voltage threshold and
adjustable response time (17.5 mm)
E18 F77
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^Applications
■Features
E18 F77 is used where a constant monitoring of the supply voltage is necessary in order to avoid machine's malfunctions in undervoltage condition. E.g. pumps, compressors, lifts, cranes, etc.
Safety circuit (output relay normally energised)
Response time: 5^15 min
Automatic reset at recovering of normal
conditions
Fixed threshold voltage: 170 Vac (75% of 230Vac) Output with 1 change-over contact Under threshold and energised relay
Technical data
Supply voltage
From 170 to 250 Vac; 50 and 60 Hz
Power consumption
< 2 VA
Response time
5^15 min
Function
F77
Contacts rating
8 A 250 Vac / 24 Vdc (resistive)
Operating life
electrical: 105 operations (full load) cos 9 1 mechanical: 5 x 106 operations
Indications
LED light on: no failure, delay time elapsed, and relay energised
slow blink: relay de-energised due to a pre­sent failure
fast blink: relay de-energised, no failure and delay time in progress
Temperature range
operating:-10°C +55°C storage: -30°C +80°C
Mounting
35 mm DIN rail (EN50022)
Connections
screw
Protections
housing: IP30 terminals: IP20
Housing
fiberglass reinforced polycarbonate
Dimensions
18.5 x 61.5 x 89 mm
Weight
74 g
ring and function diagrams
170Vac
plication diagram and operating mode
R output relay is energised only with a supply voltage greater than 170 Vac and after the set response time. E18 F77 device operates by de-energising the relay if the supply voltage goes under the fixed threshold for a time greater than 100 ms.
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L1 L2
Approvals
mensions
Declaration of conformity
Rohs (Directive 2002/95/CE)
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3d
dering code
ce
E18.BJ.17.77.V0
2.8

pageCatalog pdf di En 2012-05-22-29