Cutter Control Circuit (For Optional Cutter) - Citizen CL-E700 series Technical Manual

Chapter 2 Operating Principles
2-2.
Operation of Control Parts

(9) Cutter control circuit (for optional cutter)

The cutter control circuit supplies VMT (+24V DC) to an optional cutter.
* For VMT (+24V DC), refer to
When a cutter is installed in the printer, pin D12 (CPTYP0) of the FPGA (U5) is set to "Low"
level. With this "Low" level signal, the printer recognizes that the cutter is connected to. (In
reality, the FPGA judges the connected optional device (either cutter or peeler) by detecting
both signals CPTYP0 (at pin D12) and CPTYP1 (at pin D9)).
The cutter action is controlled by the signals CUTCON0 and CUTCON1 (at pins J1 and J2)
output from the FPGA. The cutter home position signal is input to pin B1 (CUTHP).
A thermistor is attached to the cutter motor for detecting the motor temperature. The signal
from the thermistor is input to pin 100 (TMPCUT) of the CPU (U1A). The CPU detects the
temperature by monitoring the TMPCUT signal and controls the printer as follows.
• When the temperature is 78  C (172.4  F) or more:
Stops the cutter motor.
The LED on the operation panel blinks in red and the LCD displays "Error Cutter Fail".
• When the cutter motor get cold and the temperature falls below 70°C (158°F):
The cutter operation automatically resumes.
U5
FPGA
J1
CUTCON0
21_J1
J2
CUTCON1
22_J2
B1
CUTHP
11_B1
D12
CPTYP0
74_D12
D9
CPTYP1
74_D9
(from the Peeler)
U1A
CPU
100
TMPCUT
AN6
U5
FPGA
TMPENB_CUT
71_A15
A15
nTMPERR
21_K1
K1
CL-E700 series
"2-2-5(1) PF motor
+3.3V
R60
R61
R62
R63
C97
L: When Cutter is installed.
R65
C98
R64
C96
TEMP ERROR Detection
+3.3V
R38
TMPCUT
R40
C60
Error: Low
nTMPERR
(L: Disables ribbon motor drive.)
driver".
(+24V)
VMT
J4
F1
1 1
2 2
9 9
10
10
11 11
12 12
+3.3V
13 13
R59
3-6
R66
+3.3V
U8B
R34
5
+
7
6
-
BA2903SFVM
[SA Main PCB]
2-46
J302
J301
1
VMT
VMT 2
CUTCON_0 3
CUTCON_1
4
CUT_HP 5
TMP_CUT 6
OPTION TYPE_0
7
8,9,10
3-6
[SA Relay PCB]
Cutter
+24V
+24V
CUTCTL0
CUTCTL1
CUTHP
CUTTH
CPRTYP0
GND