Boiler house Level controls
2
Wiring diagram
1
2
3
2.3 107
8
0.5 A (semi- delay)
7
7
2 1 E
4
5
6
Item 1
MIN output contact, de-energizing delay 3 seconds
2 Pump output contact. Not used in continuous controller 3 MAX output contact, de-energizing delay 3 seconds 4 Supply voltage connection 24 Vdc with semi-delay fuse 0.5 A provided on site 5 Output 4-20 mA, manipulated variable Y for continuous controller or actual value output for ON/ OFF controller (pump control) 6 Level transmitter LP20/LP21/PA420, 4-20 mA 7 Earthing point at auxilliary equipment (e.g.PA420/LP20/LP21) 8 Central earthing point (CEP) in control cabinet
TI-P693-23 EMM Issue 1
Page 3 of 4
LCR2251 Level Controller
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