Citizen CLP-621 Technical Manual

2-2. Operation of Control Partstrol Parts
CLP-621 & CLP-631 2-26 CLP-621 & CLP-631 2-26
(3-5) PF motor temperature sensor (3-5) PF motor temperature sensor
The PF motor temperature sensor is used to detect the temperature of the PF Motor. This
sensor is a thermistor bonded to the PF Motor. Since the resistance of the thermistor
changes according to the temperature change, the voltage at pin 8 (MOTTMP) of IC1
(CPU) changes accordingly. The CPU senses the voltage at pin 8 to detect the PF motor
temperature.
The PF motor temperature sensor is used to detect the temperature of the PF Motor. This
sensor is a thermistor bonded to the PF Motor. Since the resistance of the thermistor
changes according to the temperature change, the voltage at pin 8 (MOTTMP) of IC1
(CPU) changes accordingly. The CPU senses the voltage at pin 8 to detect the PF motor
temperature.
6
CN5
M
PF Motor
7
Thermistor
+3.3V
R97
C69
IC1
CPU
[Main PCB]
MOTTMP
ANI3
8
TEMPOFF
(To PF Motor Driver)
IC23A
uPD271G2
-
+
2
3
7
+5V
+3.3V
R163
R167
R166
R165
R162
R161
Printing operation at PF motor temperature rise:
When the temperature of the PF motor rises above 95
°C (203°F), printing speed is
reduced to avoid overheating. If it reaches 105
°C (221°F), the PF motor stops after printing
the current label. In this case, PRINT LED and CONDITION LED alternately blink on the
operation panel.
When the temperature of the PF motor falls below 90
°C (194°F), LEDs stop blink and
printing resumes.
90°C
(194
°F)
95°C
(203
°F)
Normal speed
(Stop)
Normal speed
Normal speed
105°C
(221
°F)
Low speed
(Stops)
(Stop)
In addition to the PF motor temperature rise detection by the CPU, the circuitry composed
of IC23A OP amp. detects the temperature rise to enhance the security for temperature
rise. If the PF motor temperature exceeds 130
°C (266°F), the output of IC23A is reversed
and TEMPOFF signal goes “Low” level. As a result, +24V supply to the PF motor driver
circuit is shut off. (For a detailed description, refer to (4-1) “PF motor driver”.) When the PF
motor temperature falls below 125
°C (257°F), the output of IC23A returns from “Low” to
“High” level so that +24V supply to the PF motor driver circuit resumes.

Citizen CLP-621 Specifications

General

USB port	No
RS-232 interface	Yes
Optional connectivity	Ethernet
USB 1.1 ports quantity	1
USB 2.0 ports quantity	0
Connectivity technology	Wired
Flash memory	2 MB
Certification	UL, C-UL, FCC class A, CCC, CE Marking
Internal memory	8 MB
Number of fonts	2
Built-in barcodes	PDF417, UPC-A, UPC-E
Built-in processor	32 Bit RISC
Mean cycles between failures (MCBF)	1000
Power consumption	2400 mA
Power requirements	100 - 240V, 50 / 60Hz
Compatible operating systems	Windows 2000, XP, Vista
Core diameter	25.4 mm
Ribbon length	360 m
Media thickness	0.0635 - 0.254 mm
Maximum label length	812 m
Maximum roll diameter	127 mm
Supported paper width	19.5 - 118 mm

Weight and Dimensions

Depth	114 mm
Width	91 mm
Height	104 mm