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LLC8430F26P PDF预览

LLC8430F26P

更新时间: 2024-11-06 00:56:43
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力特 - LITTELFUSE /
页数 文件大小 规格书
2页 418K
描述
The LLC8 Series is a low cost, single-probe conductive liquid level control designed for low liquid level cutoff protection

LLC8430F26P 数据手册

 浏览型号LLC8430F26P的Datasheet PDF文件第2页 
Protection Relays  
Pump Controls and Liquid Level Controls  
LLC8 SERIES  
Low Level Cutoff Liquid Level Controls  
Description  
The LLC8 Series is a low cost, single-probe conductive liquid  
level control designed for low liquid level cutoff protection. It  
offers a factory fixed time delay of 1 - 60s and is available for  
input voltages of 24, 120, or 230VAC. LED indicator illuminates  
whenever the LLC8s isolated, 10A, SPDT output relay is  
energized. Sense resistance is fixed from 5K - 250KΩ. Available  
with manual/automatic reset or a special manual reset with a  
power outage feature that auto resets the unit when power is  
restored and the water level is acceptable. 24 and 120VAC units  
are UL recognized as limit switches under UL353 (230VAC units  
are UL 508) and CSA certified under Standard 14.  
Operation  
Automatic Reset (Reset switch not connected): When liquid  
rises to low level cutoff probe, output relay and LED indicator  
energize. When liquid falls below the low level cutoff probe,  
the output relay and LED indicator de-energize after a fixed  
time delay.  
Wiring Diagram  
V = Voltage  
LLCO = Low Level  
Probe  
G, CP = Ground or  
Common  
(Reference)  
Probe  
R = Optional NC  
Reset Switch  
(not included)  
NO = Normally Open  
NC = Normally Closed  
C = Common or  
Transfer Contact  
Manual Reset (Reset switch connected): When the liquid  
level falls below low level probe, the output relay and LED  
de-energize after a fixed time delay. When the liquid level rises  
to low level probe, the output relay and LED indicator remain  
de-energized until the NC manual reset switch is opened; then  
they energize immediately.  
Power Outage Manual Reset (Reset switch connected):  
A power outage causes the output relay and LED indicator to  
de-energize. Upon restoration of power, if the liquid is touching  
the low level probe, the output relay and LED indicator will  
re-energize. If the liquid level is below the low level probe, the  
output relay and LED indicator remain de-energized until the NC  
reset switch is opened.  
Metal Tank or use  
additional Probe  
Relay contacts are isolated. Connect common to conductive tank. Additional probe is  
necessary for non-conductive or insulated tanks.  
Features & Benefits  
Ordering Information  
FEATURES  
BENEFITS  
TIME  
Isolated 12VAC probes  
Prevents scale buildup on probe  
INPUT  
VOLTAGE  
SENSE  
MODEL  
DELAY  
(FIXED)  
RESET  
RESISTANCE  
Cost effective design for OEM low liquid level  
cutoff protection  
Open PCB design  
LLC825F5M  
24VAC  
5s  
5kΩ  
10kΩ  
10kΩ  
Manual/automatic  
Manual/automatic  
Manual/automatic  
Conformally coated PCB  
LED indication  
Protects against moisture and corrosion  
Visual indication output relay is energized  
LLC842F103M 120VAC 2s  
LLC843F10M 120VAC 3s  
Power outage  
manual reset  
Manual/automatic  
Power outage  
manual reset  
Power outage  
manual reset  
Power outage protection  
(see ordering table  
for models)  
Automatically resets the unit when power is  
restored and the water level is acceptable  
LLC843F10P  
120VAC 3s  
10kΩ  
26kΩ  
26kΩ  
LLC843F26M 120VAC 3s  
24VAC & 120VAC models  
meet UL353  
Required for use as a low level limit switch  
LLC843F26P  
LLC845F25P  
120VAC 3s  
120VAC 5s  
25kΩ  
Power outage  
manual reset  
LLC8430F250P 120VAC 30s  
250kΩ  
Power outage  
manual reset  
Manual/automatic  
Power outage  
manual reset  
LLC8430F26P 120VAC 30s  
LLC8610F12M 230VAC 10s  
26kΩ  
12kΩ  
26kΩ  
LLC863F26P  
230VAC 3s  
If you don’t find the part you need, call us for a custom product 800-843-8848  
© 2016 Littelfuse Protection Relays & Controls  
www.littelfuse.com/llc8  
Rev: 1-A-062716  

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