19.11. Check List
If the AD-4401A operates improperly, contact your local A&D dealer.
Use the chart below to write necessary items before contacting your dealer.
Checking item Example
Weighed product Plastic pellet, livestock feed
Capacity of the weighing instrument 20.00 kg
Minimum division of the weighing instrument 0.01 kg
Initial load on the weighing instrument 30 kg
Load cell connection method 6-wire ・ 4-wire 6-wire
Length of the extension load cell cable m Approx. 100 m
Cross section of the load cell cable mm
2
0.5 mm
2
Number of load cells connected 3 units
Summing box Used ・ Not used Used
Load cell model number and manufacturer LC4221-K050 A&D
Load cell rated capacity 50.99 kg
Load cell rated output mV/V 2.0394 mV/V
Load cell input resistance
Ω 400 Ω
Load cell output resistance
Ω 350 Ω
Load cell output at initial load *1 mV/V Approx. 0.4 mV/V
Load cell output at capacity or any load. *1
At
mV/V
At 20.00 kg
Approx. 0.8 mV/V
Control I/O Connected to Feed valve, lamp
Setpoint input Connected to
Standard serial output Connected to
OP-01 BCD output Connected to
OP-03 RS-422/485 Connected to PLC (Mitsubishi)
OP-04 RS-232C Connected to
OP-07 Analog 4-20mA output Connected to
*1 Refer to"19.8. Checking Load Cell Input".
Digital multimeter measurement value
Measurement points Measurement value
1 EXC+ 4 EXC- V
5 SIG+ 6 SIG- mV
1 EXC+ 2 SEN+ V
4 EXC- 3 SEN- V
6 SIG- 4 EXC- V
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