WATANABE ELECTRIC INDUSTRY AM-215A Instruction Manual Download Page 2

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③,④: Output terminals

· An analog output (4-20 mA or 0-10 V) or an RS485 interface can

be selected.

⑦: DZ (Digital Zero)

The previously displayed value is set to zero. After this setting,
measurement is performed based on this “zero” point for display.
When the b.uP is OFF, turning the power OFF will cancel this
setting.

* The DZ terminal is enabled by short-circuiting it with the COM

terminal or setting it to level “0”. It is disabled by
open-circuiting it or setting it to level “1”.

Level “0”: 0-1.5 V

Level “1”: 3.5-5 V

Input current: -0.5 mA or below

⑧, ⑨: Power source terminals (DC POWER)

· A power source is connected to a power source terminal. The

AM-215A does not have a power switch. The power is turned ON as
soon as the power source is connected.

⑩, ⑪: EXC (sensor power source)

· An EXC terminal can be used as a sensor power source (24 V DC

25 mA maximum).

⑬ - ⑱: Comparative output terminals

· Relay output
  Contact capacity:      24 V DC/1 A (resistive load)
  Mechanical lifespan:   5 million times min.
  Electrical lifespan:   100,000 times min. (resistive load)
· Photocoupler output
  Output capacity:   Voltage: 30 V max., Current: 50 mA max.
  The maximum output saturation voltage is 1.2 V at 50 mA.

* Use the relay output and photocoupler output within the range of
the rated capacity.

4 Parameter Setting

4.1

Component Name and Function

① Main display area: Displays measured values, as well as menus and

their contents for parameter setting.

② Check results display area: Displays the check results (when using the

GO output, neither the AL1 nor the AL2 is
flashing).

③ ENTER switch: Move from the measurement mode to the parameter

setting mode (“ENTER” + “Mode”).

④ Mode switch: In the parameter setting mode, switch from one item

to another.

Move to the shift data setting mode

(“Mode” + “Shift”).

Turn the DZ terminal ON/OFF on the front panel

(“Mode” + “Increment”).

⑤ Shift switch: In the parameter setting mode, switch from one

digit to another.

Move to the shift data setting mode

(“Mode” + “Shift”).

⑥ Increment switch: Select numerical value (“Increment”) and the

contents for parameter setting.

Turn the DZ terminal ON/OFF on the front panel
(“Mode” + “Increment”).

* All parameters can be initialized by switching on a power supply, pushing

all keys.

* When the b.uP of the condition data is turned OFF, turning the power
OFF cancels the digital zero value.

● Parameter group

The parameters of the AM-215A fall into the five categories below.
This manual does not explain the settings of the shift data and
the linearize data. They are explained in a different manual. If
that manual is needed, please contact our dealer or office.

4.1.1 Condition Data Setting

Instruction Manual for MODEL AM-215A UL 2/4

Caution

！

(1) Apply the rated voltage at once (gradually increasing the applied voltage may not turn the machine
ON).
(2) The time interval for turning the power ON/OFF should be at least 10 seconds (turning the power
ON/OFF within 10 seconds may not turn the machine ON).
(3) T h e I N P U T L O , E X C 0 V , a n d C O M t e r m i n a l s a r e a t t h e s a m e p o t e n t i a l , b u t t h e y s h o u l d b e w i r e d
s e p a r a t e l y . (When using a 2-wire sensor, terminals 2-11 should be externally connected.)
(4) When no terminals are selected for outputting, do not connect anything to vacant terminals.

AL1 AL2

Ｅ

Ｍ

①

②

④

③

⑤

⑥

Condition data

A group of parameters that relate to the basic operations and functions of
the AM-215A, such as sampling rate.

Comparator data

A group of parameters that relate to comparative outputs.

Scaling data

A group of parameters that relate to measurements, such as decimal
point and displayed value, and input signals.

Shift data

A parameter that relates to the function to forcibly shift a displayed value.

Linearize data

A parameter that performs corrections to determine a straight line
representing input signals and displayed values.

(Data length)

(Baud rate)

(Digital limiter typ)

(Display blanking)

(Step wide)

(Moving-average

calculation frequency)

(Average frequency)

(Protect level)

(Parity bit)

(Stop bit)

(Delimiter)

(Equipment ID)

(DZ Backup)

(Linearize)

(TZ correction

time)

(TZ correction

width)

(Delay time when the

power is turned ON)

All parameters are
displayed.
Conparator and scaling
data are displayed.

Only comparator data are
displayed.
Only pl parameters are
displayed.

Once (25 times/sec)

OFF(no movingaverage
calculation)

Normal.

The smallest digit is an
even numder.

The smallest digit is 0 or
5

Brightest

Bright

Dim

Dimmest

Turned off

Retained as a digital limiter value.

Displayed as a value out of the digital limiter value.

9600bps

4800bps

2400bps

38400bps

19200bps

7bit

8bit

Even parity

Odd parity

No parity

1bit

2bit

CR+LF

～

The ID of RS-485 equipment is set (00 not permitted).

The digital zero value is stored when the power is turned OFF.

The linearize function is not used.

～

Tracking zero correction time (set value ×times of
sampling).

～

Tracking zero correction width (set value ×digit).

～

No delay time when the power is turned ON.

Digit shift

Numerical value or option
change

Back to measurement
operasion

(Measurement operation)

*The default value is 00.

Default value

If M key is pushed in the state of each menu name or there is no key operation
during 1 second, it will shift to contents selection of a parameter. Moreover, when
there is no key operation during 8 seconds at the time of selection of the contents
of a parameter, it returns to a menu.

Twice (12.5 times/sec)

4 times (6.25 times/sec)

8 times (3.125 times/sec)

10 times (2.5 times/sec)

20 times (12.5 times/sec)

40times(0.625 times/sec)

80 times (0.31 times/sec)

100times(0.25 times/sec)

200times(0.13 times/sec)

Twice.

4 times.

8 times.