BEKA BA627E, Instruction Manual, Page: 16 / 16

7.4 External encoder
For applications requiring the output of the BA627E
Set Point Station to be controlled externally,
terminals 5, 6 and 7 enable a wide range of three
wire quadrature encoders with switch contact
outputs to be directly connected to the BA627E. To
prevent accidental adjustment, the encoder only
changes the Set Point Station’s output when the
E
button is operated. The Set Point Station’s output
current can still be controlled by the ▲ and ▼
buttons when an external encoder is connected.
7.4.1 BEKA BA490 rotary encoder
The BEKA BA490 quadrature output rotary encoder
has been designed to operate with the BA627E Set
Point Station. It is an IP66 panel mounting device
with a 20mm diameter control. The two output
waveforms and connections are shown in Fig 10.
Fig 10 BA490 rotary encoder output waveforms
Interconnections between the BA627E Set Point
Station and the external BA490 Rotary Encoder are
shown below.
BA627E BA490
Terminal Nos, Terminal Nos,
5 A
6 B
7 C
16