External Control Inputs(Eci); Di(Digital Input), Reset For Relay Energized Latch; Analogue Output Functions - ADTEK MW-5 Operating Manual


Hysteresis(Fig.3-)
Settable range from 0~9999 Counts
The function is to avoid the relay on and off
frequently, when the display value is swing near by
the set point. The typical application is to control a
compressor. User can set a band to prevent the
relay on and off frequently

Relay energized delay(Fig.3-)
Settable range from
0.0(second)~9(minutes)59.9(seconds);
The function is to avoid the miss action caused by
noise. Sometime, the display value will swing
caused by spark of contactor. User can set a
period to delay the relay energized.

Relay de-energized delay(Fig.3-)
Settable range from
0.0(second)~9(minutes)59.9(seconds)
Energized / De-energized
Delay & Hysteresis
[ry_.sp]
Hi Setting
[ry_.rd]

Relay
Energized

2 External Control Inputs(ECI)

■
The meter offers 2 point external control inputs
(ECI). They can be programmed individual with
versatile display and control functions. The front
key function can be set to execute ECI function. At
meantime, ECI terminals will be disabling. The
input from terminal has designed level trigger.
Please refer to description as below,

ECI Functions
Relative PV / PV Hold / Reset for Maximum or
Minimum Hold / DI(Digital Input) / Reset for Relay
Energized Latch
●
Relative PV(Active power)
The [ ecI_] can be set to be reLpv(Relative PV)
function. When the ECI is closed, the reading will
show the differential value with PV(Active power).
●
PV(Active power) Hold
The [ ecI_] can be set to be pVhld(PV Hold)
function. The display will be hold when the E.C.I. is
closed, until the ECI is to be open. Please refer to
the below figures.
PV Hold & Reset
Present
Value
Reset PV Hold
O
by E.C.I. or
N
Front Key
Fig.3
[ry_.hy]

Hysteresis
[ry_.fd]

ON
PV Hold
[ e c I _ ]
Level
ON ON
Trigger
pVhld
MW-5 Operating Manual 2012-07-19
●
Reset for Maximum or Minimum Hold
The [ ecI_] function can be set to be Mrst
function to reset the maximum and minimum value
by terminal of ECI.
Especially, the [dsply] function in [input group]
can be set to be to maXh or minIh to operate in
coordination with DO of PLC. It is easier to achieve
the maximum value testing in automation. Please
refer to the below figures.
M ax. ( M ini.) Hold & Reset
Present
M axim um H old
Value
Reset the Max
(Mini) Hold by
E.C.I. or F. Key
●
DI(Digital Input)
The [ ecI_] can be set to be
function, when the meter building in RS485 port.
The computer is easier to get a switch status
through the meter as like as DI of PLC.
●
Reset for Relay Energized Latch
If the relay energized mode has been set to be
hIhld(Energized latch), and the [ ecI_] can be
set to be rYrst(Reset Relay function). When the
PV meets the condition of relay energizing, the
relay will be energized and latch until the ECI is to
be closed.

Analogue Output Functions

■
Please specify the output type either a 0~10V
or 4(0)~20mA in ordering. The output low and high
can be programmable which it's related to various
display values. Reverse slope output is possible by
reversing point positions.

The output range related to various display
values
Programmable range: 0~99999
●
Analogue Output low related display
Low[ aOls]
Setting the Display value Low to versus output
range Low(as like as 4mA in A4-20).
●
Analogue Output high related display
high[ aOhs]
Setting the Display value high to versus output
range high(as like as 20mA in A4-20).
Please refer to the figure as following,
[ dsply]
maXh
[ e c I _ ]
Level
O
Trigger Mrst
N
dI (Digital Input)
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