MD Series (Electronic Predetermining Counter)
INSTRUCTION MANUAL
2 or 4 DIGITS
LARGE LED DISPLAY - 14.22 x 8.13 mm
SMALL SIZE - FITS DIN 72 x 72mm
SPECIFICATIONS
Specs
Display
Number of Digits
Number of Preset Digits
Preset Levels
Power Supply
Operating Modes
Input
Count Speed
Pulse Width
Pulse Interval
Switch Output
Pulse Output
Output Time
Reset
Change of Preset Value
During Operation
Power Consumption
Input Impedance
Preset Lamp
Power Lamp
Operating Temperature
Operating Humidity
Hi - Pot Test
Dielectric Test
Material
Net Weight
Models
MD-144 MD-144M MD-122 MD-122M
Red LED ( 14.22 x 8.13 mm )
4 4 2 2
1,000 Hours 1,000 Hours
1 1 1 1 1 1
Convertible - 115 VAC, 230 VAC ±10% 50/60 Hz
Instantaneous Reset Type : Selectable / Overrun Type : Selectable
Direct Current : 4.5 to 27 VDC
Proximity - Sensor : 12 VDC 30 mA maximum
Switch Signal : Relay, Microswitch
Pulse Input : 1,000 cps / Switch input : 20 cps
Pulse Input : 0.5 msec. mnimum / Switch input : 25 msec minimum
Pulse Input : 0.5 msec. mnimum / Switch input : 25 msec minimum
1C, 230 VAC, 4 A COS = 1
Transistor Rated ( 45VDC, 100 mA maximum )
200 msec. or 1 sec. - Instantaneous Reset Type. Indefinite-Overrun Type.
Automatic Reset : Instantaneous Reset Type
( Display will be reset in 0.3 msec. and output relay will be reset in 200 msec. or 1 sec. )
Remote Reset : 100 msec. minimum
Power Reset : 1 sec. minimum ( Not available with model having memory. )
Possible
4 VA
5 K
Lighted while output relay is actuated
Lighted while power is ON, not lighted while input signal is being received
-10°C - +50° C (Memory Type: 0°C - +40°C)
45 to 85% RH
1500 VAC for one minute
20 M minimum (500V megger)
Case - ABS resin
560 grams
MD-104 MD-102
FEATURES
· Line Seiki predetermining counters-highly reliable and
extremely versatile.
· Large , high-brightness LED’s.
· Protected against accidental Tripping of output relay.
· Fits DIN panel opening.
· Built-in power supply module.
· Switch or pulse input and output.
· Two operating modes, instantaneous reset or overrun.
· Memory circuit stores count data during power failures.
· Dustproof thumbwheel switches.
CONNECTIONS
See diagram for location of terminals
1. Power Supply
· 115 VAC - Terminal and
· 230 VAC - Terminal and
2. Input
a) Pulse
Positive, regulated 4.5 VDC to 27 VDC - Terminal
Negative - Terminal
b) Proximity Sensor ( 12VDC )
Positive 12 VDC - Terminal
Negative - Terminal
Output - Terminal
16 17
15 17
4
3
2
3
4
4. Remote Reset
Terminal and
( Counter can be reset by conventional switch, relay or microswitch. )
5. Output Time
0.2 second - no connection to negative of supply
1.0 second - negative of supply - Terminal
Indefinite - negative of supply - Terminal
6. Operating Mode
Instantaneous Reset Type : no connection required.
Overrun Type : Terminal , connect to negative of supply.
7. Memory
Connect Terminal to Terminal on MD-144M or MD-122M
NOTE : Disconnect wiring to prevent battery discharge when the counter is
out of service for more than 1,000 hours. Battery is charged whenever power
is being supplied. The LED display is extinguished while MD-144M or
MD-122M is used on power failure, and the counter will not operate even
if input signal or reset signal is received.
( input signals do not consume battery energy. )
8. CAUTION
Switch input and proximity-sensor input cannot be used at the same time.
Do not apply voltage to switch input terminals or remote-reset terminals.
CONNECTIONS
5
7 3
6
10
11
11
Sensor
Remote ResetSwitch Input
c) Switch
Terminal and
3. Output
a) Pulse ( 45 VDC at 100mA maximum ) - Terminal
b) Switch ( 230 VAC , 4A ; resistive load )
N. C. ( closed during count ) - Terminal
N. O. ( closed at present number ) - Terminal
COMMON - Terminal
BUILT - IN POWER SUPPLY
EXTERNAL POWER SUPPLY
1
5 - 30 VDC
Power Source
2
14
12
2
12 VDC
Relay
9
-
+
13
Open
Collector
Output
Signal
4
15
5
Output
1 second
16617
GND+ 12V
Output
Latched
until
(
reset
(
GND
1
9
Memory
(
Type Only
12
2
7 8 9 10 11
GNDMemory
(
13314
COM. N. 0. N. C. 230 115 0 V
Relay Output AC
8
-
5 - 30 VDC
Relay
9
OPERATING MODE
INSTANTANEOUS RESET TYPE
Power
Input
Output (One Shot)
Display (Counts)
Remote Reset
OVERRUN TYPE
Power
Input
Output (One Shot)
Display (Counts)
Remote Reset
0.3 sec
When the preset number is reached, output signal
is provided by relay or open collector transistor.
Preset Value
1
2
3
1
2
3
n - 1
nn2
n - 111
3
0.2 sec or 1 sec.
2
3
5
5
6 7
1
2
3
10
2
3
100 msec. minimum
4
4
The preset number is instantaneously reset to
zero and the counter immediately begins to accept input
signals. This type is ideally suited for controls on
continuous production. Output relay or open collector
transistor is actuated at the preset number and it is
automatically unlatched in 0.2 or 1 second.
0.3 sec
When the preset number is reached, output signal is
n + 1
n + 3
n + 2
n + 3
n + 5
n + 4
Latch
1
2
334
10
2
4
100 msec. minimum
5
provided by relay or open collector transistor. The
counter will continue to add counts beyond the preset
number until reset is made. This type is suitable to coil
5
winding applications. Output will be latched until reset
is made.
Preset Value
1
2
3
1
2
3
n - 1 n + 2
n
n + 1
n - 1
n
DIMENSIONS - MILLIMETERS
72
+0.7
0
( H ) 68.0
1 2 3 4
72
PANEL OPENING
OUT
IN
107.58 9.5
172
394105116
8
C N. O.
N. C. 230 115AC0 V
OUT
67.2
SIZE OF FIGURE
67.2
14.22
+0.7
( W ) 68.0
0
LINE SEIKI CO., LTD
37-7, CHUO-CHO, 2-CHOME
MEGURO-KU, TOKYO
JAPAN 152-0001
TEL: +83-3-3716-5151
FAX: +83-3-3710-4552
E-MAIL: webtrade@line.co.jp
URL: http://www.lineseiki.com
8.13
This manual was last revised Feb. 06, 2003.
All Rights Reserved,Copyright © 2003,LINE SEIKI CO.,LTD.
*Subject to change without prior notice.
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