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| | | 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 | | |
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| | | 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 | | |
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| | | ring and function diagrams | | |
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| | | 170Vac | | |
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| | | plication diagram and operating mode | | |
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| | | 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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| | | Approvals | | |
| | | mensions | | |
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| | | Declaration of conformity Rohs (Directive 2002/95/CE) | | |
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| | | dering code | | |
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| | | E18.BJ.17.77.V0 | | |
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