© Elcom s. r. o.
Service manual
Euro 2500
TX
29
3.3 Paper feeding
3.3 Paper feeding
The feeding of paper in POS-4000 is taken care of by twin stepping motors. One feed step will feed 0.125 mm of paper tape.
3.3.1 Stepping motor specification
3.3.1 Stepping motor specification
3.3.2 Excitation sequence
3.3.2 Excitation sequence
3.4 Printer connectors
3.4 Printer connectors
Item
Specification
Type
PM
Control method
Bipolar control
Excitation
2 × 2 phase excitation
Coil resistance per phase
36 Ω ± 10%
Operating voltage
24 V
Current per phase
Approx. 107 mA
Tab. 3.2: Stepping motor specification
Input signal
Output signal
PH1
PH2
B
A
B
A
Step 1
L
H
L
H
H
L
Step 2
H
H
H
H
L
L
Step 3
H
L
H
L
L
H
Step 4
L
L
L
L
H
H
Tab. 3.3: Excitation sequence
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Number
Function
Number of pins
1
Thermal head
16
ELCO
2
Motor connector
4
MOLEX, 53325-41
3
Sensor connector
5
MOLEX, 53325-51
Tab. 3.4: Printer connectors
