ABB RHD Series - 7 Electrical Test Values; Test Values (Position Sensor)

RHD250 to 4000 (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/RHD250/4000-EN REV. A 29
7 Electrical test values
DANGER
Danger to life due to unexpected movement of the actuator!
Unexpected movement of the actuator may lead to very
serious injuries or to death.
• Make sure that the actuator can move without posing a
danger to people!
WARNING
Risk of injury due to live parts!
Risk of death or serious injuries due to electricity and
unexpected machine movements. In automatic mode the
motor is always under power, even at standstill.
• When working on the actuator or the related subassembly,
switch off the supply voltage for the electronic unit and
separate anti-condensation heater (option), and take
precautions to prevent unintentional switch-on.
HINWEIS
If you loosen the motor terminal box for whatever reason use
an appropriate liquid sealing compound for the sealing
surface (e. g. Elastosil E41) in addition to the rubber gasket
before you fasten the box.
Note
Check wiring and proper terminal connections before you start
the test procedure.
Test values (position sensor)
1
Signal terminals
Figure 52: Signal terminal location
The in- / output signals are assigned to terminals of the
electronic unit as follows:
Terminal*
Value
17
DC +15 V; ± 15 % (supply); refer to terminal 22
18
not used
19
Clock
20
Data
21
Reference potential for position signal
22
Reference potential for temp. signal and supply voltage
23
Position proportional voltage signal
(0.4 to 4.4 V); refer to terminal 21; end positions of actuator
must be adjusted
24
temperature proportional voltage signal; refer to terminal 22;
(Δ V approx. 22.4 mV / °C; approx. 1.8 V at 20 °C)
* see Figure 52 for terminal position)