Digital Filter; Relay Functions - ADTEK MW-5 Operating Manual

Moving Average set to be 3
Sample 1 Sample 2 Sample 3
In first 3 samples, Display Update Value
= (Sample 1 + Sample 2 + Sample 3)/3
Display Update Value
= (Sample 2 + Sample 3 + Sample 4)/3


Digital filter

Settable range from 0(None)/1~99 times.
The digital filter can reduce the influence of spark
noise caused by magnetic of coil.
If the values of samples are over digital filter
band(fix in firmware and about 5% of stable reading)
3 times (Digital Filter set to be 3) continuously, the
meter will admit the samples and update the new
reading. Otherwise, it will be as treat as a noise
and skip the samples.
Digital Filter set to be 3
Present
Value

Relay Functions

■
MW-5 series offer the 2 relay outputs with
flexible and versatile functions. They can be
programmed individually in [relay group]。
Please refer to the description as following;

Relay energized mode Hi / Lo / Hi.HLd / Lo.HLd /
DO
●
Hi(Fig.1-): Relay will be energized when
PV > Set Point
●
Lo(Fig.1-): Relay will be energized when
PV < Set Point
Hi / Lo Relay Energized
[ry_.sp]
Hi Setting
[ry_.sp]
Lo Setting
[ry_.md]
hi Hi Relay Energized
lo
Lo Relay Energized
●
Hi.HLd (Lo.HLd)
The relay energized and latched function is for
electrical safety and human protection.
For example, a current meter relay installed for
over current alarm of motor. Generally, over current
of motor caused by over load, mechanical dead
4 / 36
.......
Sample 4 Sample 5 Sample 6
Display Update Value
= (Sample 3 + Sample 4 + Sample 5)/3
Display Update Value
= (Sample 4 + Sample 5 + Sample 6)/3
Digital Filter Function
The values of samples are
over the filter band and three
times, so that the reading will
accept the samples, and
update the reading.
Digital Filter Function
The values of samples are
two times only, so that the
reading will admit the
samples.
Fig.1

ON

ON
MW-5 Operating Manual 2012-07-19
lock, aging of insulation and so on. In the case of
alarm of meter, if the user doesn't figure out the real
reason and re-start the motor. It may damage the
motor. The function is designed that must be
manual reset the alarm after checking out and
solving the issue. It's very important idea for
electrical safety and human protection.
If the PV Higher (or lower) than set-point, the relay
will be energized and latch until manual reset by
from key in [user level] or [ eci](ECI) input.
Hi(Lo) Energized Latch & Reset
[ry_.sp]
Hi Setting
[ry_.md]
hIhld
Hi.HLd(High Hold)
Relay Energized
[
ecI_]
Reset the relay Hold
rYrst
by ECI or Front Key
●
DO
The function has been designed that is not only a
meter but also an I/O interface. In the case of motor
control cabinet, it does normally can not get the
remote function. It's very easily to get the status of
switch and remote ON/OFF of the switch from CS2
series with RS485 function.
If the [ry_.md] has been set
be energized by RS485 command directly, and no
longer to compare with set-point.

Start delay band and Start delay time
The functions have been designed for,
1. To avoid alarm for the starting current of
inductive motor(6 times of rated current).
2. If the ry_.md relay energized mode has been set
to be lo(Lo) or lOhld(Lo & latch), the relay
will be energized, when the meter is power on
and no input due to the "0" display. User can set
a band and delay time to inhibit the energized of
relay.

Start band(Fig.2-)
Settable range from 0~9999 Counts
●
Start delay time(Fig.2-)
Settable range from
0.0(second)~9(minutes)59.9(seconds);
Start Delay
[ry_.sp]
Hi Setting
[ rYsb]
Start Band

Relay
Start Delay Time
Energized
[ r Ys d ]

ON
ON
Level T rigger
do, the relay will
Fig.2
Inhibit
Inhibit
ON