
71
Magtrol WB/PB Dynamometers
Chapter 4 – Connections / Configuration
4.3.3
S
Peed
S
ignAl
c
onnection
Speed measuring requires a 5 V supply. The square TTL type output signal frequency is proportional
to the speed. According to the polar wheel mounted on the system, the pulse number (per revolution)
will be 30, 60, 600 or 6000. For additional information on this item, refer to the dynamometer's
corresponding data sheet in
Section 1.2
.
Note:
The use of a 600-bit encoder limits the speed of the system to
10,000 rpm. If the testing application requires, Magtrol can offer a
speed sensor providing 6,000 impulses per revolution. This provides
a higher resolution but limits the speed to 1000 rpm.
1 2
3
1. 5 V
2. Supply 0 V
3. Signal TTL
Figure 4–12 Connector Pin Configuration for WB/PB 2.7 and 43 Dynamometer Speed Signals
Note:
The use of shielded cable is mandatory. Connect cable shielding
to the connector housing.
C
B
A
D
A
Supply 0 V
B. Signal TTL
C. Shield / Grounding
D. 5 V
Figure 4–13 Connector Pin Configuration for WB/PB 65, 115 and 15 Dynamometer Speed Signals
Note:
The use of shielded cable is mandatory. Connect cable shielding
to the connector housing.