Boiler house Level controls
2
Wiring diagrams Wiring diagram (LCR2652) - Valve Motor Drive Controller (VMD)
ALARM
13
MIN
CLOSE OPEN
MAX
1
1
2.3 43
2
3
3
4
1
1
M 0.5 A (semi-delay)
11
12
12
12
12
5
LP20/LP21/PA420
2 1
7
8
9
6
10
Fig. 4
Item 1
Fixing screws for terminal strip
2
MIN output contact, de-energizing delay: 3 sec.
3 Output contacts for activating the control valve. External link wire necessary for function 4 MAX output contact, de-energizing delay: 3 sec. 5 Connection of supply voltage 24 Vdc with fuse 0.5 A (semi-delay) provided on site 6 Actual value output 4-20 mA 7 Feedwater flowrate input, 4-20 mA 8 Steam flowrate input, 4-20 mA 9 Data line for operating and display unit BHD50 10 Level transmitter LP20/LP21/PA420, 4-20 mA 11 Central earthing point (CEP) in control cabinet 12 Earthing point at the auxiliary equipment (e.g. PA420/LP20/LP21) 13 Input for level limit switch (24Vdc), ON = alarm, OFF = normal water level
TI-P693-24 EMM Issue 1
Page 3 of 6
LCR2652 BHD50 Level Controller Operating and Display Unit
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