Mitsubishi Electric PLFY-WP VBM-E, Data Book

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3. SYSTEM DESIGN GUIDE
2 - 60
WR2
MEE15K052
Operation ON signal
Pump Interlock
Terminal No.
Output
TB8-1, 2
Relay contacts output Rated voltage : L1 - N : 220 ~ 240V
Rated load : 1A
Terminal No.
Input
Operation
TB8-3, 4
FS
Short-circuit wire
When connecting a pump interlock circuit
(The wires drawn in dotted lines are field supplied.)
Contact rating 250 VAC 10 mA or above
Minimum applicable load 5 mA or below
TB8
4
3
Level signal
If the circuit between TB8-3 and TB8-4 is open, compressor operation is prohibited.
( )
Operation
• When setting No.917 for Dip switch 4 (Dip switch 6-10 is ON) is OFF.
The relay closes during compressor operation.
• When setting No.917 for Dip switch 4 (Dip switch 6-10 is ON) is ON.
The relay closes during reception of cooling or the heating operation signal from the controller.
(Note : It is output even if the thermostat is OFF (when the compressor is stopped).)
SW4 0: OFF, 1: ON
1 2 3 4 5 6 7 8 9 10
1 0 1 0 1 0 0 1 1 1
*Remove the short circuit wire between 3 and 4 when wiring to TB8.
To prevent a false detection of error resulting from contact failure, use a flow switch with a minimum
guaranteed current of 5 mA or below for FS.
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