CS2-SG-2010-09-27
Hi / Lo / Go Relay Energized
Jittery Display caused by the noise or unstable signal. User can set the times to average
the readings, and to get smoothly display.
The meter’s sampling is 15cycle/sec. If the [avg](Average) set to be 3 to
express the display update with 5 times/sec. The meter will calculate the sampling 1-3
and update the display value. At meantime, the sampling 4-6 will be processed to
calculate.
Display Update Value =
(Sample 1 + Sample 2 + Sample 3)/3
Display Update Value =
(Sample 4 + Sample 5 + Sample 6)/3
Remark: The higher average setting will cause the response time of
Relay and Analogue output slower.
Hi.HLd hIhld (Lo.HLd lOhld) :
The relay energized with latched function is for electrical
safety and human protection.
For example, a current meter relay installed for the over
current alarm of motor. Generally, over current of motor
caused by over load, mechanical dead lock, aging of insulation
and so on.
Above cases will alarm in the meter, if the user doesn't figure
out the real reason and re-start the motor. It may damage the
motor. The functions of Hi.HLd & Lo.HLd are designed must
be manual reset the alarm after checking out and solving the
issue. It's very important idea for electrical safety and human
protection.
As the PV Higher (or lower) than set-point, the relay will be
energized to latch except manual reset by from key in [ user
level]or [eci](ECI) set to be rYrst is closed.
Jittery Display caused by the reasons as like as noise or unstable signal. User can set
the times to average the readings, and get smoothly display.
The meter’s sampling is 15cycle/sec. If the [ Mavg](Moving Average) set to be 3
expressed the display update with 15 times/sec.,
In the first updated display value will be same as average function. In the next updated
display value, the function will get the new fourth sample (sample 4) then throw away the
first sample (sample 1) that the newest 3 samples(sample 2,3,4) will be calculated for the
updated display value.
Moving Average set tobe 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
Display Update Value
= (Sample 3 + Sample 4 + Sample 5)/3
Display Update Value
= (Sample 4 + Sample 5 + Sample 6)/3
Remark: The higher moving average setting wouldn’t cause the
response time of Relay and Analogue output slower after first 3
samples.
Hi(Lo) Energized Latch & Reset
Hi.HLd(High Hold)
Relay Energized
Reset therelayHold
byECI or Front Key
The function has been designed not only a meter but also an
I/O interface. In the case of motor control cabinet can't get the
remote function. It's very easily to get the ON/OFF status of
switch from CS2 series with RS485 function.
If the [ry_.md]had been set do, the relay will be
energized by RS485 command directly, but no longer to
compare with set-point.
The digital filter can reduce the magnetic noise in field.
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.
Start delay band and Start delay time:
The functions have Been designed for,
►To avoid starting current of inductive motor (6 times of rated current)
with alarm.
►If the ry_.md relay energized mode had been set to be lo(Lo) or
lOhld(Lo & latch). As the meter is power on and no input to display
the "0" caused the relay will be energized. User can set a band and
delay time to inhibit the energized of relay.
Control Functions(option)
Hi / Lo / Go-1.2 / Go-2.3 / Hi.HLd / Lo.HLd / DO programmable
Relay will energize when PV > Set-Point
Relay will energize when PV < Set-Point
Start band rYsb (Fig.2-): Settable range from 0~9999 Counts
Start delay time rYsd (Fig.2-): Settable range from 0.0(s)~9(m)59.9(s);
This function is programmable in Relay 4 only.
If the Relay 4 set to be Go function, the relay will compare
with [ry!sp] and [ry@sp].
Go relay energized when the condition is
[ry!sp](Hi) > PV > [ry@sp](Lo)
Hysteresis ry_.hy (Fig.3-): Settable range from 0~9999 Counts
As the display value is swing near by the set point to cause the relay on
and off frequently. The function is to avoid the relay on and off frequently
such as compressor…….etc.,
This function is programmable in Relay 4 only.
If the Relay 4 set to be Go function, the relay will compare
with [ry@sp] and [ry#sp].
Go relay energized when the condition is
[ry@sp](Hi) > PV > [ry#sp](Lo)
Relay energized delay ry_.rd (Fig.3-): Settable range from 0.0(s)~9(m)59.9(s);
The function is to avoid the miss action caused by noise. Sometime, the
display value will swing caused by spark of contactor…etc.. User can set
a period to delay the relay energized.
