Alfa Laval ThinkTop - Electrical Connection, Internal - Digital 24 VDC

5Installation
5.4Electricalconnection,internal-Digital24VDC
6
Solenoid1
1
Closedvalve
7
Solenoid2
2
Openvalve
8
Solenoid3
3
Seat-lift1
9
Supply+
4
Seat-lift2
10
Supply-
5
Status
11
Solenoidcom
12
NPN/PNPJumper**)
Eart-
h
Earth13
NPN/PNPJumper**)
20
Solenoidcommongrey
24
Seat-lift1“upper”*)
21
Solenoid1,grey
25
Seat-lift2“lower”*)
22
Solenoid2,grey
26
Supply+*)
23
Solenoid3,grey
27
Supply-*)
T T
T
able able
able
1. 1.
1.
Note! Note!
Note!
*)Ifusingexternalsensor,thesensormustbeactive/activatedwhenperformingaset-uproutineofthecontrolhead.
Terminals24,25,26and27canbeusedforexternalseatliftsensorsaswellasforanydigitalinput.Alwaysuseanexternal
PNPsensor.Twoexternalsignalscanbeconnected;theseareassociatedwithfeedbacksignal3(seat-lift1)and4(seat-lift
2).Externalsensormustalwaysbea8-30VDCPNP3wiresensor.Connect(-)commononterminal27and(+)common
onterminal26.Thesignalsfromtheexternalsensorsareassociatedasfollows:sensorsignalonterminal24(seat-lift1)
associatedwithfeedback3(seat-lift1)andsensorsignalonterminal25(seat-lift2)associatedwithfeedback4(seat-lift2).
**)Jumperpresent=PNP .Ifchangingthefunctionapowerrecycleisnecessary.TheselectionNPN/PNPisdoneby
thejumper.
***)
Internalconnections:Terminalsforconnectionforthesolenoidsmountedinternallyinthecontrolhead.Thenumberof
solenoidsactuallymountedinthecontrolheadcouldbe0-3.Thesignalsaretakendirectlyfromtheterminalrow.
Note! Note!
Note!
Remembertoisolatewiresthatarenotinuse.
5.5Exampleofusingcommonpowersupply
Installajumperbetweenterminal10+11toextendthesensorboardsupplytothesolenoidvalves.
A:Jumper
22