Voltage Monitor Relay With Reset

The Volt­age Mon­i­tor Relay With Reset (ac­knowl­edg­ment) has out­puts for a sig­nal, buzzer or other in­di­ca­tors. It can be used to turn on/off acoustic or op­ti­cal warn­ing sig­nals when the input volt­age drops below/ex­ceeds a de­fined volt­age level.

 

Function

When the input volt­age ap­plied to ter­mi­nal 15 drops below the de­fined thresh­old volt­age out­puts 87, 87a, and C are turned on. Out­put 87 can be switched off again via reset input x (ac­knowl­edge­ment) while out­puts 87a and C re­main on.
When the input volt­age on ter­mi­nal 15 ex­ceeds the de­fined thresh­old volt­age all out­puts are switched off. Cus­tom thresh­old volt­ages are avail­able on re­quest.

Please refer to the chap­ter hous­ing and base plates for ad­di­tional hous­ing op­tions.

Application Examples

Application Examples
Ana­log sig­nal mon­i­tor­ing e.g. pres­sure mon­i­tor­ing

Technical data

Product Name Value
Op­er­at­ing tem­per­a­ture -40 °C bis 85 °C
Out­put cur­rent limit (87, 87a) 4 A, short cir­cuit and over­load pro­tected
Out­put load limit (C) 2 W, un­pro­tected
Switch­ing delay 10 sec
En­vi­ron­men­tal pro­tec­tion IP53
EMC 2006/96 EG
e1 ap­proval num­ber 03 3218

Design

Connection diagram

Product Details

Product Name Features Housing Order No.
Volt­age mon­i­tor with reset 12 V thresh­olds: 11,5 V / 12,5 V; un­der­volt­age mon­i­tor with 87a G2/T 1.​008.​110.​00E
Volt­age mon­i­tor with reset 24 V thresh­olds: 23,0 V / 25,0 V; un­der­volt­age mon­i­tor with 87a G2/T 1.​008.​210.​00E
Volt­age mon­i­tor with reset 12 V thresh­olds: 11,5 V / 12,5 V; un­der­volt­age mon­i­tor w/o 87a G2/T 1.​008.​111.​00E
Volt­age mon­i­tor with reset 24 V thresh­olds: 23,0 V / 25,0 V; un­der­volt­age mon­i­tor w/o 87a G2/T 1.​008.​211.​00E

Accessories

Product Name Order No.
Pro­gram­ming tool MRS Re­al­izer I 1.​100.​000.​00
Flat pin socket 1.​017.​002.​00
FAS­TON ter­mi­nal 6.3 mm 1.5-2.5 mm2 103064
FAS­TON ter­mi­nal 6.3 mm 1 mm2 102355
FAS­TON ter­mi­nal 2.8 mm 0.5-1.0 mm2 105292
Hous­ing bracket 1.​017.​080.​00