ADTEK ST-VA Operation Manual

ST-VA
(V1.0)
ST-PR
(V1.0)
ST-SG
(V1.0)
ST-PM
(V1.0)
ST-RS
(V1.0)
ST-T
(V1.0)
■ FEATURES
【ST-VA】
 Measuring Voltage 0~600V or Current 0~5A for DC / AC / TRMS
 Accuracy:  0.04% or  0.1%; Display range: -19999~29999
【ST-PR】
 Measuring Voltage 0~10Vdc & Current 0(4)~20mAdc
 Accuracy:  0.04%; Display range: -19999~29999
【ST-SG】
 Measuring Strain Gauge 0~1.0/~2.0/~4.0/...../~10.0/20.0/~40.0mV/V
 Field calibration with strain gauge to meet the system requirement
【ST-PM】
 Measuring Potentiometer 0~100Ω/~2KΩ; 0~100Ω~100 KΩ(3 wire)
 Field calibration with strain gauge to meet the system requirement
【ST-RS】
 Measuring Resistance 0~200Ω/~2000Ω/~20.00KΩ/~200.0KΩ(2 wire)
 Field calibration with Resistance to meet the system requirement
【ST-TR(C)】

Measuring Rtd: Pt100Ω / Thermocouple: K, J, E, T, R, S, B
FUNCTIONS
● User function, easily programmable via the top panel
● Analogue output, RS 485 communication port and 1 Relay output
available
● Analogue output can be selected in 0~10V/0(4)~20mA
● Relay output for Hi / Lo energized with Start Delay / Hysteresis /
Energized & De-energized Delay / Relay Energized Hold..... functions
● RS 485 communication port available
FUNCTIONS
■ DISPLAY FUNCTIONS

Maximum Hold or Minimum Hold:
The converter will keep display in maximum value
during power on until manual reset by front key in
【User Level】

Write to display by RS485 command
 The display can be written by RS485 command. In
past, The converter nomorlly receive 4~20mA or
0~10V from AO card or BCD card of PLC. We support
a new solution by RS485 writing in so that can be
save cost and wiring into PLC.

Low Cut / Digital Filter / Digital Fine Adjustment

Low Cut: seting range from -5000~+5000 counts.
 If the setting value is positive, it means the range of
absolute value will be 0; PV≤ Setting value, the
display will be 0;
EX：Low Cut is set for 0.10, if the display is from
-0.10~+0.10, that will be 0.
 If the setting value is negative, it means the range of
under setting value will be 0; PV≤ -Setting value, the
display will be 0;
VOLT/CURRENT CONDITIONER
PROCESS(DC) CONDITIONER
STRAIN GAUGE CONDITIONER
POTENTIOMETER CONDITIONER
RESISTANCE CONDITIONER
TEMPERATURE CONDITIONER
OPERATION MANUAL
EX：Low Cut is set for -0.01, if the display is ≤ -0.01,
and all the display will be 0.
 Digital filter: seting range from 0(None)/1~99 times.
The digital filter can reduce the magnetic noise in field.

Digital Fine Adjustment: seting range from
-19999~+29999 ; Users can get Fine Adjustment by
front key of the converter, and "Just Key In" the value
which user want to show in the current input signals.
■ RELAY FUNCTIONS

Start Delay

Hysteresis: Settable range from 0~9999 Counts

Relay energized delay: Settable range from
0.1(second)~9(minutes)59.9(seconds);

Relay de-energized delay: Settable range from
0.1(second)~9(minutes)59.9(seconds)

Relay energized mode Hi / Lo / Hi.HLd / Lo.HLd / DO

Hi: Relay will energize when PV > Set-Point

Lo: Relay will energize when PV < Set-Point

Hi.HLd (Lo.HLd): When the PV Higher (or lower) than
set-point, the relay will be energized and hold until
manual reset by from key in【User Level】.
1 / 12 ST-VA/PR/SG/PM/RS/T MANUAL -2015-09-08