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1WMPD4003659
1. Safety Precautions
All safety messages are identified by the following, "WARNING" or
"CAUTION", of ANSI Z535.4 (American National Standard Institute:
Product Safety Signs and Labels). The meanings are as follows:
WARNING
A potentially hazardous situation which,
if not avoided, could result in death or
serious injury.
CAUTION
A potentially hazardous situation which,
if not avoided, may result in minor or
moderate injury.
This manual is subject to change without notice at any time
to improve the product.
Product specifications are subject to change without any
obligation on the part of the manufacturer.
When using the AD-1612, the following safety precautions
should always be observed.
CAUTION
Do not disassemble the AD-1612. Disassembling may
cause damage to the AD-1612. Damage caused by
disassembling will not be covered by the warranty. Contact
your local A&D dealer if the AD-1612 needs service or
repair.
If a problem has occurred and you cannot resolve it, stop
using the AD-1612.
2. Introduction
This manual describes how the AD-1612 comparator buzzer works
and how to get the most out of it in terms of performance.
Read this manual completely before using the AD-1612.
3. About the AD-1612
3-1. Features
By connecting the balance / scale comparator output to the
AD-1612, up to five levels of comparator lights and up to five
types of buzzer sounds can be output.
The AD-1612 can light up or sound according to the contact input.
(short-circuited between each pin and COM)
The buzzer sound level can be adjusted using the volume knob
on the front panel of the device.
Power for the AD-1612 is provided using the AC adapter
provided for the balance / scale. By connecting the scale and
AD-1612 using the provided DC cable, power can be provided to
both the balance / scale and AD-1612 by using a single AC
adapter.
By connecting the signal lines to the terminals on the rear side of
the device, the RS-232C can be bypassed to the D-sub 9 pin
connector.
3-2. Precautions for use
Carefully confirm the AC adapter rating before connecting it to
the device.
Failure to do so may result in mechanical damages to the
internal circuit or result in buzzer sound or LED output
fluctuating.
Adjusting the volume for buzzer sound level to MIN. means the
buzzer will sound very quietly, not that it will output no sound at
all. To set the buzzer to output no sound, the device must be set
using the function settings. Refer to “9. Function Settings”.
The COM is internally connected to GND. Refer to “8. Internal
Configuration”.
Connecting the plus polarity of the external device to the COM or
adding high voltage to the HI / LO terminals side may cause
mechanical damage.
If the desktop stand slips, attach the provided rubber feet to the
bottom of the stand.
4. Parts Description / Accessories
4-1. AD-1612
4-2. Accessories
(1) DC cable (1.8m): 1 pc
(2) Rubber feet
：
4 pcs
(3) Instruction manual
(This document)
5. Mode
6. How to Connect
6-1. Connecting the comparator contact
Connect the signal lines of the relay contact output of the device to
the 1st to 6th pin of the terminal block.
Note Confirm “8. Internal Configuration” beforehand to properly
perform the wiring.
6-2. Connecting the RS-232C
Terminal block: Connect the signal lines of the balance / scale to
the 7th to 10th pin of the terminal block.
D-sub 9 pin:
Connect the cable to the connector on side of the
(male)
device.
6-3. Power Supply
Power is supplied to the AD-1612 by the AC adapter when
connected to the [IN] DC jack. (The pilot lamp is on.)
Confirm the specifications of the AC adapter before inserting
it. (DC 7.5 to 15 V)
When using the AC adapter provided for the balance / scale,
connect the AC adapter to the [IN] DC jack. Then, connect
the DC cable to the [OUT] DC jack and balance / scale.
Note 1 When the buzzer is at the maximum volume, the
AD-1612 needs up to 500 mA of current. When using at
a large buzzer volume, supply power to the balance /
scale and AD-1612 with a separate AC adapter. (Refer
to “11-2. Options”.)
Note 2 When grounding the device, use the screw (including
inner clip washer) on the side of the device as the
grounding terminal.
6-4. Example
＜
Connecting the comparator output of the EK-i series
＞
** Comparator output terminal assignment table **
Refer to the A&D website for other information on connections.
Mode
Operations Entering
the
mode Pilot
lamp
At start up
(1)
Normal
mode
Performs comparator
operations
Press and hold
the [SET] key in
setting mode
On
(2)
Setting
mode
Sets LED brightness
and buzzer sound
Press and hold
the [SET] key in
normal mode
Off
Pin
No.
Signal
name
Comparator light
1
HI-2
Red: Right end
2
HI-1
Yellow: Second from the right
3
OK Green:
Center
4
LO-1
Yellow: Second from the left
5
LO-2
Red: Left end
6
COM
-----
EK-i
AD-1612
Terminal
Terminal
LED
Pin No. Description Pin No. Description
Color
Position
4
HI
2 HI-1
Yellow
Second from the
right
3
OK
3
OK
Green
Center
2
LO
4 LO-1
Yellow
Second from the
left
1 COM 6 COM
-----
Scale connection example
(FG communication option)
Pin assignments
1 2 3 4 5
6 7 8 9
Inch screw
LO
OK
HI
SET
SELECT
MIN
MAX
AD-1612
Desktop stand
Comparator light
Terminals
Pilot lamp
Speaker
Volume
SET key
SELECT key
RS-232C port
Ground
terminal
screw
DC jack
(2)
1 N.C.
2 Receive data
3 Transmit data
4 N.C.
5 Signal ground
6 Data set ready
7 Request to send
8 Clear to send
9 N.C.
10 SG
9 RXD
8 TXD
7 DSR
2
3
5
7
Terminal block
DIN 8pin
FG
AD-1612
AC adapter (provided with EK-i)
DC cable
(provided)
DC jack for AC adapter
Comparator output
(OP-04)
Treminal block (1 to 6)
Output connector
MSTB2.5/4-GF-5.08
Solid state relay
COM
LO
OK
HI
1
2
3
4
Inside of
EK/EW-i
LO*
OK*
HI*
LO
OK
HI
MIN MAX
AD-1612
Power
EK-i
AD-1612
*
DC jack (IN)
DC jack (OUT)
