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Emerson Series 3000 MVD Manuel D’Utilisation

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Configuration and Use Manual
271
Installing Relays
Rela
y In
stal
latio
n
Series
 3
000 
Men
u
s
Defaults
Spec
ifications – Model 
3
100
Figure D-10
Model 3350 or Model 3700 to user-supplied relay 
Step 2
Connect relay wiring to control devices
The method used to connect the relay to the control device depends on the function the relay will 
perform. For an illustration of typical wiring for a 2-stage batch application, see Figure D-11.
Figure D-11
User-supplied relay to control device: 2-stage batch application
External 
power supply
User-supplied relays
Model 3350 or Model 3700 input/output wiring terminals
Gray terminal block
See Figure 2-2
Wire size is 22 to 16 AWG (0,35 to 1,5 mm
2
)
• 12 to 30 VDC
• Maximum coil load:
500 mA/relay
500 mA maximum
500 mA maximum
500 mA maximum
+
–
User-supplied relays
Primary control valve
or other control device
Secondary control valve 
or other control device
Pump or other
control device