Instruction Manual MODEL AM-756
2/20
1 Before Use
Thank you for purchasing the AM-756 Digital Meter Relay. Please ensure this
instruction manual is kept on hand for users of this device. Please inspect the
product for any signs of shipping damage and contact your dealer or Watanabe
Electric Industry Co., Ltd if anything comes to your attention.
1-1 Model Configuration
The model configuration of the AM-756 is shown below. Please check that the
product received matches the product ordered.
AM-756-
□□
-
□
□
-
□
Series Name
Comparative
Output
Options
Power
2.
Input
±199.999mV
±1999.99mV
±19.9999V
±199.999V
DV.
±19.9999mA
2
3
.
±199.999mA
2
4
.
D
B
.
1
to
5V
4
to
20mA
±199.999mV
12
to
48V
DC
100
to
240V
AC
1.
Off
External control
BCD output (TTL) + external control
BCD output (OC) + external control
Analog external control
4
.
3
.
2.
1.
0.
2.
Photocoupler output
Relay output
1.
Off
0.
Basic Model
Name
1-2 Accessories
1 instruction manual
1 unit sticker
2 terminal covers for 6P terminal block (attached to main unit for shipment)
2 case attachment bands (attached to main unit for shipment)
･
When BCD output is included as an option:
1 connector (8822E-036-171-F (manufactured by KEL))
2 Installation
2-1 Panel Cutout Size
The panel cutout size for mounting the AM-756 Digital Meter Relay is shown
in the diagram below.
Min. 120mm
M
in
.
7
0
m
m
+
0
.6
-0
4
5
92
-0
+0.8
2-2 External Dimensions
48
96
91.5
102.5
77
86
.5
(9
7.
5)
21
.4
11
(0
.5
)
(2
)
Mode
Enter
/
88
.5
2-3 Mounting the Unit on the Panel
1) After removing the mounting bands from the
main unit, please insert the unit from the front side
of the panel.
2) Fix the unit in place from the rear of the panel
using the mounting bands to the left and right.
(1)
Panel board thickness should be 0.8 to 5mm.
(2)
Please do not install the device in the following locations.
･
Locations with sudden changes in temperature resulting in
condensation.
•
Locations with corrosive gases (particularly sulfide gas, ammonia
etc.) or flammable gases.
•
Locations where the main unit may be subjected to vibration or
impact.
•
Locations where the unit may come in contact with water, oil,
chemicals, steam or vapor.
•
Locations with high concentrations of dust, salinity or iron particles.
•
Locations with large inductive interference resulting in static
electricity, magnetic fields or noise.
•
Locations exposed to direct sunlight.
•
Locations where heat accumulation from radiant heat and other
sources occurs.
(3)
In order to ensure heat dissipation is not obstructed, please allow room
around the device for heat to be released and ensure the device’s
ventilation holes and surroundings are not obstructed. When
installing this device inside other equipment, check the heat release to
ensure the temperature inside the equipment does not exceed 50°C.
(4)
Please install this device horizontally.
CAUTION