WÄRTSILÄ Vasa R22, Instruction Manual

Page: 291 / 297

23.2.6 Adjustments of the Despemes cards
Adjustments of the Despemes cards
Card
Function Adj.
Measured
at
Ind.
Remarks and
normal set point
V Hz
C1
DC/DC
Power supply
R21/R29 LED
Adjustment normally not needed.
C2
Rot. speed of engine
P501 TP2 TP1 Tach.
1500 RPM=950 Hz=10 VDC
nDE
Fuel lim. control
P502 TP4 LED
Diagram A.
Set point: 100 RPM below nominal or idling speed
2 s. delay
P503 TP5 TP1 LED
Diagram B
Set point: 2 seconds on-delay
Simulation of running
engine
TP2 TP1 Tach.
Make shortcirc. at TP3 and disconnect engine
pickup
C3
Relay 1: Engine running
(300 rpm)
P601 TP1 LED 1
Hour count., prelub. control blocking signals,
diagram A
Relay
card
Delay
P604 P604
mid
LED 1
0...30 s, diagram C.
Set point: No delay
Relay 2: Optional or
115 RPM
P602 TP2 LED 2
Diagram A
Set point: 115 RPM on 4-cyl. engines with start
motor.
Delay
P605 P605
mid
LED 2
0...30 s, diagram C.
Set point: 20 s. offdelay on 4-cyl. engines with start
motor.
Relay 3: Overspeed
protection
P603 TP3 LED 3
Diagram A.
Set point: 15 % over nominal speed
Delay
P606 P606
mid
LED 3
0...30 s, diagram C.
Set point: No delay.
C4
Rot. speed of
turbocharger
P701 TP2 TP1 Tach.
50.000 RPM=5.000 Hz=10 VDC
(Setting valid for ABB, VTR-type turbochargers).
nTC
Rot. speed of
turbocharger
P711 TP4 TP3 Tach.
For V-engines only, setting as above.
C5
Relay
card
Varies Optional card.
Adj. method as C3.
See Fig 23-9 for diagrams and testpoints.
Note! All measurements to be performed between testpoints (TP)
and internal system gnd. A gnd point can be found above
terminal 11 on the motherboard, or e.g. at terminals 26 or 28.
23 Instrumentation and Automation 22-9601
23 - 16 VASA 22