AND Weighing Indicator AD-4401, Instruction Manual

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CHAPTER 3 INSTALLATION AND CONNECTIONS
This chapter describes the installation environment, and connections to the power terminals and load cell connector. For
other external inputs/outputs, see their relevant descriptive chapters.
Control I/O, Setpoint (SETPOINT), Standard serial output (SER. OUT) —— Chapter 8
Options —— Chapter 9
3-1 ENVIRONMENT
This is a precision electronic instrument. Handle it very carefully.
The
working temperature range is -5 to +40°C. Install it in a place free from
the direct sunlight. When water drops may splash over the
instrument, attach it to a control panel, using the accessory
packing. This makes the instrument's front panel splash-proof.
3-2 POWER SUPPLY
1) Prior to connecting the power source, read this manual thoroughly.
2) Be sure to earth ground the instrument. Use independent grounding if possible. Try not to share grounding with
other electric devices that create electrical noise.
3) The power source should be either 100 to 120 VAC +10%/-15% specification, or 200 to 240 VAC +10%/-15%
specification; with a frequency of 50 or 60 Hz. Use a stable power source free from instantaneous dropout or
noise. Sharing a power line could result in malfunctioning.
4) The load cell output is very weak. Do not install any noise-generating device near the load cell or the load cell
cables.
5) Each input/output cable should be shielded and connected to either shield terminal 7 or 10 of the terminal strip on
the rear of the indicator. Use of terminal 11 or the indicator body, could induce electrical noise.
Terminal No. Terminal Function
1 EXC+ Load cell excitation voltage (+)
2 SEN+ Sensing input (+)
3 SEN- Sensing input (-)
4 EXC- Load cell excitation voltage (-)
5 SIG+ Load cell input (+)
6 SIG- Load cell input (-)
7 SHLD Shield
Load cell Connections
8 A+ 4 to 20 mA output (+)
9 A- 4 to 20 mA output (-)
10 SHLD Shield
OP-07
11 E FG
12
AC AC power supply
13 AC AC power supply
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