VT-4810 (V3) Data Sheet 9-17-98

VT-4810 (V3) Data Sheet 9-17-98
CASE DIMENSIONS
45 mm
(1.77")
VT-4810 AUTO TUNE
PID CONTROLLER
45 mm
(1.77")
P
V
48 mm
(1.89")
S
V
100 mm
(3.95")
45 mm
(1.77")
Panel Cutout
Microprocessor Based PID Controller with Ramp and Soak
ALM
OUT
E
45 mm
(1.77")
10
VT-48
ATE
TEXM
48 mm
(1.89")
6 mm
(.24")
FEATURES
• Single segment RAMP/SOAK function
• Selectable P,PI,PID control modes
• Selectable auto tune or manual PID
ORDERING INFORMATION
• Selectable display resolution for 1 or 0.1°
VT-4810 / ___ ___
• Wide range power supply
• Selectable alarm relay modes
T= Thermocouple input
R= Control output is relay 5 A / 240 V resistive load
D= RTD input
P= Control output is pulsed 24 VDC (100 mA max)
L= Linear 4 to 20 mA input
X= Control output is 4 to 20 mA (max load 500 Ω)
C= Custom linear input
Y= Control output is 0 to 20 mA (max load 500 Ω)
V= Voltage output 0 to 5 / 1 to 5 / 0 to 10 VDC
C= Custom voltage or current output
WARRANTY
Texmate warrants that its products are free from defects in material and workmanship under normal use and service for a period of one year
from date of shipment. Texmate’s obligations under this warranty are limited to replacement or repair, at its option, at its factory, of any of the
products which shall, within the applicable period after shipment, be returned to Texmate’s facility, transportation charges pre-paid, and which
are, after examination, disclosed to the satisfaction of Texmate to be thus defective. The warranty shall not apply to any equipment which shall
have been repaired or altered, except by Texmate, or which shall have been subjected to misuse, negligence, or accident. In no case shall
Texmate’s liability exceed the original purchase price. The aforementioned provisions do not extend the original warranty period of any product
which has been either repaired or replaced by Texmate.
USER’S RESPONSIBILITY
We are pleased to offer suggestions on the use of our various products either by way of printed matter or through direct contact with our
sales/application engineering staff. However, since we have no control over the use of our products once they are shipped, NO WARRANTY
WHETHER OF MERCHANTABILITY, FITNESS FOR PURPOSE, OR OTHERWISE is made beyond the repair, replacement, or refund of purchase price at the sole discretion of Texmate. Users shall determine the suitability of the product for the intended application before using, and
the users assume all risk and liability whatsoever in connection therewith, regardless of any of our suggestions or statements as to application
or construction. In no event shall Texmate’s liability, in law or otherwise, be in excess of the purchase price of the product.
Texmate cannot assume responsibility for any circuitry described. No circuit patent licenses are implied. Texmate reserves the right to
change circuitry, specifications, and prices without notice at any time.
Local Distributor Address
995 Park Center Drive • Vista, CA 92083-8397
Tel: (760) 598-9899 • Fax: (760) 598-9828
URL: http://www.texmate.com
Texmate, Inc. Tel. (760) 598-9899
1. INPUT
• Thermocouple: J,K,T,E,B,R,S,N
(IPTS68/DIN 43710)
• RTD: RTD (DIN 43760/BS 1904 or JIS)
• Linear Voltage: -10 to 60 mV configurable
with input attenuation
• Linear Current: 4 to 20 mA or 0 to 20 mA,
60 mV (max) voltage drop
• Range: User configurable
• Accuracy: ±2°C for T/C, ±0.2°C for RTD,
±0.05% for Linear input.
• Cold Junction Compensation: 0.1 % ambient typical.
• Input Impedance: 10M ohms for T/C, 100K
ohms for Linear Voltage, 2.7 Ohms for 0 to
20 mA or 4 to 20 mA inputs.
• Excitation Current for RTD: 0.2mA Max.
• Sample Rate: 4 readings / sec.
• Common Mode Rejection: 120 dB
• Normal Mode Rejection: 60dB
2. Control
• Proportional Band: 0.0 ~ 100.0 % of full scale
• Integral Time: 0 ~ 3600 Sec.
Texmate has facilities in Japan, New Zealand, Taiwan, and Thailand. We also
have authorized distributors throughout the USA and in 28 other countries.
Page 12 VT-4810
SPECIFICATIONS
(V3) 12-2-98
(V3) 12-2-98
• Derivative Time: 0 ~ 3600 Sec.
• Anti Reset Windup: Inhibit integral action
outside Proportional Band
• Manual reset: 0 to 100% of proportional band
• Hysteresis: 0.0 to 25.5% of full scale
• Ramp Rate: 0.0 ~100.0°C /minute
• Dwell: 0 ~9999 minutes
• On-Off: With adjustable hysteresis
• Cycle Time: 0 ~ 99 Seconds
• Control Action: Configurable for direct
(cooling) or reverse (heating) control
3. Output
• Relay: 5A/240 VAC resistive .
• Pulsed Voltage: Isolated 24 V DC 100 mA
(max) for SSR drive. On voltage 24 V. Off
voltage 3 V
• Current: Isolated 0 to 20 mA or 4 to 20 mA
Maximum load 500 Ω. Voltage
• Alarm: Relay output, Form A contact (SPST)
10A/240 VAC resistive
4. Power
• Rating: 85 ~ 265 VAC 50/60 Hz.
• Consumption: 5 VA maximum.
5. Environmental
• Operating Temperature: -10 ~ 50°C
• Humidity: 0 ~ 90 %
• Insulation: 20M ohms minimum @ 500 V DC
• EMC Emission: EN 50081-1:1992, EN
55022:1994
• EMC Immunity: EN 50082-1:1992, IEC 8012, IEC801-3, IEC 801-4:1988.
• Weight: 180g
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 1
This manual contains information for the installation and operation of Texmate VT4810 auto-tuning microprocessor based controller.
This controller is a “on off” or “proportional plus integral plus derivative” (PID) controller. The facilities include
a wide range of inputs (T/C, RTD, LINEAR), auto/manual/PID, and ramp/soak function. The front panel is
equipped with two 4-digit displays showing process and setpoint value at a glance. The sensor types, alarm
modes, control parameter, unit, resolution, auto/manual mode, range all can be selected by the four touch
keys on the front panel. The auto-tuning facility provides a fast method of setting up the control parameters
with minimal overshoot.
PARAMETER PROGRAMMING
Parameter
Default
Setting
Programmed
Setting
User Setting
User Setting
0.0
0.0
10
INSTALLATION
0.0
PANEL MOUNTING
• Prepare a cutout in your panel of 45 mm by 45 mm. The panel on which the controller will be mounted
may be up to 10 mm thick.
• Remove plastic mounting bracket on VT4810. Slide meter into cutout. Replace mounting bracket, tighten
screws. Do not tighten the mounting screws too tightly since this can bow the controller housing.
240
40
0
3
FRONT PANEL DESCRIPTION
1
PV:
SV:
Process Variable
a) Displays the actual measurement of the input sensor.
b) Displays the parameter index code.
c) Displays Error messages.
Setting Variable
a) Displays the set-point variable.
b) Displays the parameter data.
0.1
P
V
PV: Display
AT: Indicator
S
V
SV: Display
M: Manual Indicator
Alarm LED
Control Output LED
OUT
ALM
Scroll Key
ALM: Alarm 1 LED
a) LED is lit when Alarm is energized.
b) LED flashes when timer is activated and counting down.
1
0
Enter Key
E
TEXMATE
1
0
VT-4810
0.1
Up Key Down Key
2
OUT: Control Output LED: LED is lit when Control Output 1 is on.
0
AT:
Autotuning LED: Extreme right hand decimal of PV display flashes while the controller is autotuning.
0
M:
Manual Indicator: Extreme right hand decimal of SV display flashes when controller is in manual mode.
1
Scroll Key: While programming the controller, you can move from one programmable parameter to
the next by pressing the Scroll Key once. Also, to activate an autotuning session, press and hold
down this key for 5 seconds.
-50
1370
Up Key: Increases the setpoint value and changes the parameter data when programming.
0
Down Key: Decreases the setpoint value and changes the parameter data when programming.
1000
Enter Key: During normal operation, pressing the Enter Key permits the user to view the controller
output action in percentage (0~100). Pressing and holding this key for 5 seconds puts the controller
into manual operation. Press this key from any other mode to return to the standard SV value.
1
Level key: The scroll and enter keys are often used together to move from one level to the next
during programming. Both these keys should be pressed and held down for 5 seconds to move to
the next level.
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VT-4810 Page 11
PARAMETERS FLOWCHART
CONNECTION AND WIRING
BEFORE WIRING, VERIFY THE CONTROLLER LABEL FOR CORRECT MODEL NUMBER AND OPTION.
Hold for
4 sec.
Level 3
Proportional
Band
Integral Time
Output
Offset
Derivative
Alarm or
Set Point
Time
Remote/
Local
Hold for
4 sec.
Program Lock
Alarm Function
VT-4810 Rear View
1
CONTROL OUTPUT
Lo Calibration
Value
85~265 VAC
6
7
8
9
10
1
2
3
4
5
B
B
C
Hi Calibration
Value
Auto Tuning
Modes
–
NC
NO
+
Ramp
Rate
Hold for
4 sec.
Level 4
+
Normal
Process
Variable
Display
Level 2
–
Level 1
ALARM
Alarm Hysteresis
A
Control Action
Units °F/°C
Main input: The controller operates on 85~265 VAC 50/60 Hz.
Power should be connected via a 2 Amp fuse.
2. Sensor input: Do not run sensor cable adjacent to power carrying
conductors. The correct type of thermocouple extension lead wire
or compensating cable must be used. Ensure that the polarity of the
input is correct.
3. Control output: Different types of output may be installed in the
controller. Be sure that the correct output device for your application
is installed. Available output devices are:
• 4~20 mA or 0~20mA, Maximum load 500 ohms.
• 1~5 V, 0~5 V, 0~10 V.
• Pulsed voltage 24 V DC at 100 mA max to drive SSR.
• Relay 3A/240 VAC maximum, resistive load.
4. Alarm output: The alarm output is via a relay contact. Maximum
contact rating is 10 Amps.
CONFIGURATION AND PARAMETER SETTING
Decimal
All parameters are structured in four levels for easy programmability.
Cycle Time
Level 1.
Level 2.
Level 3.
Level 4.
Hysteresis
Operation level
Control parameter level
Configuration level
Calibration level
Error Protection
OPERATION LEVEL (LEVEL 1)
Address
1.
: Set-point Variable. This parameter is the desired target of the process. It can be adjusted within the range defined by Low Limit value and High Limit value.
2.
: Ramp rate. This forces the process to warm up (or cool down) with a predetermined rate when
power is applied. Set this parameter to zero if no ramp is needed. The process will then warm up (cool
down) with maximum speed. Ramp rate can be set in the range of 0.0 to 100.0 °C/min.
3.
: Output offset value for manual reset. For those systems, when it is desired to perform manual
reset control by setting integral time (ti) to zero. This allows the user to compensate for the deviation
between PV and SV.
4.
: Alarm 1 setpoint value. This sets the level at which the alarm 1 will operate if A 1 F u is selected for alarm function. If A 1 F u is set to a value of 8,9,10 or 11 for the timer function, this parameter will
be disabled.
5.
: Dwell time. The range is from 0 to 9999 minutes. This parameter is available only when the
A 1 F u is set to timer function.
Process Offset
Input Type
Low Limit of Range
Hi Limit of Range
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VT-4810 Page 3
CONTROL PARAMETER LEVEL (LEVEL 2)
1.
: Proportional band variable has a setting range from 0.0 to 100.0% of the controller's span. This
value is automatically calculated by activating the Autotune function. If desired, the user can later adjust
this parameter to better suit the application. Set to zero for ON/OFF control action.
2.
: Integral time (Reset) has a setting range from 0 to 3600 seconds. This value is automatically calculated by activating the Autotune function. If desired, the user can later adjust this parameter to better suit
the application. Set to zero if intergral action is not required.
3.
: Derivative (Rate) has a setting range from 0 to 3600 seconds. This value is automatically calabrated by activating the auto tune function. Set to zero, if desired the user can later adjust this perameter to better suit the application.
RAMP/SOAK DWELL
The VTR Series controller can operate as a fixed setpoint controller or as a single stage Ramp and Soak
Controller upon power-up. Ramp and Soak permits the user to limit the rate at which the controller travels
from starting point to setpoint. Also, the Alarm 1 relay can be configured to perform a “Dwell” function. Ramp,
Soak, and Dwell will be explained further below.
RAMP FUNCTION
If the parameter “rAmP” is set to a value other than “0”, the controller will perform a programmed ramp. The
process will travel twards the setpoint at a programmed rate. Rate settings range between 0.0 and 100.0
degrees per minute.
RAMP and SOAK FUNCTION
If the “AlFu” parameter is set to a “10”, the alarm 1 relay contact will be de-energized at start-up and will
become energized after the elapsed time, which the user programs, has timed-out.
CONFIGURATION LEVEL (LEVEL 3)
1.
: Remote/Local mode selection. Set to 0 for local mode or 1 for remote mode. In remote mode,
the parameters can not be changed by the keypad on the front panel. Only a connected PC can change
the controller's parameters. The VT-4810 can only be operated in local mode as it does not have a serial communication option.
2.
: Parameter Lock. Permits the user to lock-out level parameters that are not necessary or not
used. See below, and page 10.
Parameter
Lock Code #
DWELL FUNCTION
If the “AlFu” parameter is set to a “9”, the Alarm 1 relay contact will be deenergized at start-up and de-energized after trhe elapsed time, which the user programs, has timed-out.
Parameters that are adjustable in
Level 1
Level 2 Level 3 Level 4
1
SP1, ramp, A1SP (time)
All
All
All
0
SP1, A1SP (time)
All
All
All
2
SP1, oPoF, A1SP (time)
All
All
All
3
SP1, ramp, oPoF, A1SP (time)
All
All
All
4
SP1, A1SP (time)
All
All
None
5
If the power supply or control output of the controller is connected to the Aloarm 1 contacts, the controller
will operate as “guaranteed” soak controller. In other words, the controller will pause the timer if the controller deviates from setpoint (after the SV has been initially reached); once the setpoint is again matched,
the timer resumes. This ensures that the controller will soak at the desired temperature for the programmed
amount of time.
NOTE: The difference between DWELL and SOAK is that DWELL does NOT stop the timer clock when the
PV devates from the SV (after the SV has initially been reached) but the SOAK function does stop the clock
ensuring or “guaranteeing” a soak right at the desired temperature for the entire programmed time.
ERROR MESSAGE
ALARM FUNCTION
A/D converter damage
SP1, ramp, A1SP (time)
All
All
None
8
SP1, oPoF, A1SP (time)
All
All
None
7
SP1, ramp, oPoF, A1SP (time)
All
All
None
8
SP1, A1SP (time)
All
None
None
9
SP1, ramp, A1SP (time)
All
None
None
10
SP1, oPoF, A1SP (time)
All
None
None
11
SP1, ramp, oPoF, A1SP (time)
All
None
None
12
SP1, A1SP (time)
None
None
None
13
SP1, ramp, A1SP (time)
None
None
None
14
SP1, oPoF, A1SP (time)
None
None
None
15
SP1, ramp, oPoF, A1SP (time)
None
None
None
Page 4 VT-4810
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ON
SP
Incorrect operation of autotune procedure
6
TIME
On-timer
Sensor break error
Checksum error, value in memory may
have changed accidentally
9
TIME
Off-timer
OFF
SP
10
Event-On timer
11
Event-Off timer
OFF
TIME
OFF
SP
ON
TIME
ON
SP
Note: modes 4,5,6,7,14 and 15 are with standby sequence.
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VT-4810 Page 9
To initiate the autotune, press and hold the SCROLL key for at least 5 seconds until the right-most decimal point on the PV display begins flashing.
3.
0
*4
1
*5
2
When autotune is complete, the right-most decimal will cease flashing. The new P, I, and D values willnow be stored in nonvolatile memory. Adjustments can now be made manually if desired.
To abort an autotune process, simply press and hold the SCROLL key again for 5 seconds until the decimal stops flashing.
To ensure satisfactory autotune operation, it is important that the span (the difference between LoLt and
HiLt) be set carefully since 10% of this difference will determine the autotune position in 0, 2, and 4 below.
1. The controller will autotune at 10% of span below setpoint. After the autotune cycle is complete, the
process value will then rise to setpoint.
6. Every time the controller is switched on, the controller will autotune at set- point value. Note: The temperature will rise above setpoint during the autotune cycle in this model
4.
Process high alarm
A1SP
Process low alarm
8
On-timer
9
Off-timer
10
Event-On timer
11
Event-Off timer
A1SP
TIME ON
SP
TIME OFF
SP
OFF TIME OFF
SP
ON TIME ON
SP
A1SP A1SP
: Hysteresis of alarm 1. Setting range 0.0 to 25.5% of controllers Span. This parameter is used
to eliminate relay "chatter".
5.
: Control output action. Set to 0 for cooling (direct) action or 1 for heating (reverse) action.
6.
: Unit of process value. Select the correct unit for the process. Set to 0 for degree F, 1 for degree
C and 2 for other linear process.
7.
AUTO/MANUAL CONTROL MODES
Deviation low alarm
12
Deviation band high alarm
14
SP–A1SP SP SP+A1SP
A1SP A1SP
13
Deviation band low alarm
15
SP–A1SP SP SP+A1SP
Note: modes 4,5,6,7,14, and 15 are with standby sequence.
2. The controller will autotune at the setpoint. Note: The temperature will rise above the setpoint during the
autotune cycle in this mode.
5. Every time the controller is switched on, the controller will autotune at 10% of span below setpoint. After
the autotune cycle is complete, the process value will then rise to setpoint.
A1SP
SP
SP+A1SP
A1SP
SP
SP+A1SP
Deviation high alarm
*6
3
*7
Autotune teaches the controller the main characteristics of the process. It learns by cycling the output on
and off. The result are measured and used to calculate optimums PID values which are automatically
entered into nonvolatile memory. After two oscillatory cycle of ON/OFF control, the controller performs PID
control to verify the results.
3. For the first time only, when the controller is switched on, the controller will autotune at 10% of span below
setpoint. After the autotune cycle is complete, the process value will then rise to setpoint.
4. For the first time only, when the controller is switched on, the controller will autotune at the setpoint. Note:
The temperature will rise above the setpoint during the autotune cycle in this mode.
: Alarm 1 function. There are 16 modes for the alarm function, as per the table below.
:
AUTOMATIC CONTROL
In auto mode, which is the default mode, the controller automatically adjusts the output variable in accordance with the PID algorithm to reach and maintain the desired setpoint. Auto mode is the normal mode of
operation, and may be set for P, PI, PD, PID or ON/OFF control.
dp
Decimal
0
None
1
1XX•X
2
1X•XX
3
1•XXX
Decimal Point selection. This parameter defines the position of the decimal
point on the process value and setpoint.
MANUAL CONTROL
Manual control is usually used for testing purposes and allows the user to drive the outputs manually
between 0.0 to 100%. To access the manual mode, press and hold the ENTER key for 4 seconds until either
the right-most decimal point on the SV display begins flashing. The controller's output percent will now
appear on the SV display.
To return to AUTO mode from MANUAL mode, press and hold the ENTER key for 4 seconds again until the
decimal point turns off. The setpoint again appears on the SV display.
8.
: Proportional cycle time of output 1. The value can be set from 0 to 100 seconds. Set to 1 second for pulse voltage output and 0 second for 4~20 mA output. Set the value to 30 seconds or longer
is possible to help prolong the life of the relay contacts.
9.
: Hysteresis (dead band) for ON/OFF control. User can set a range from 0.0 to 25.5% of SPAN.
(used to avoid relay chatter)
Page 8 VT-4810
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(V3) 12-2-98
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VT-4810 Page 5
10 .
11.
12.
: EroP Alarm 1 Output 1
Off
Off
On
2
On
Off
3
On
On
: Processes variable offset permits the user to offset the PV indication from the actual of measured PV. For example, if the thermocouple used is producing readings 2° higher than the actual temperature across the range, the user can eliminate the 2° difference by keying “–2”. Overall range of the
setting is –500 to +500. Default = 0.
CALIBRATION LEVEL (LEVEL 4)
1.
: Low calibration value.
2.
: High calibration value.
WARNING!! NEVER ENTER THIS PROCEDURE UNLESS YOU HAVE APPROPRIATE CALIBRATION
EQUIPMENT. THIS PROCEDURE SHOULD ONLY BE PERFORMED BY A TRAINED TECHNICIAN.
1. Press both scroll and enter key simultaneously for 5 seconds, then release. Repeat above operation until
L o C A appear on the PV display.
2. Remove the sensor from the controller’s input terminals and connect a Thermocouple of RTD simulation
signal to the controller’s input terminals. For a process DC input, use a 4 to 20 mA or 1 to 5 V DC signal,
depending on the input type of controller.
3. Apply the low input signal to the controller which corresponds to the range you are using i.e., for
thermocouple input, 0°C would be applied to the controller.
: Input Type selection. Select a correct type in accordance with the input connection.
Type
15.
Off
1
: Address of the controller for serial communication. This parameter provides an identity code for
the RS-485 communication interface. Note that it is not allowable to set the same Address value for
controllers communicating with the same computer to prevent line contention problems. If the controller
does not have the RS-485 interface, this parameter can be neglected. Setting range is 0 to 31.
The VT-4810 can only be operated in local mode as it does not have a serial communication option.
13.
14.
0
Error protection. Defines protection mode for the status of control
and alarm outputs to ensure a safe condition if the sensor fails.
4. Use up and down key to adjust the SV display to match the input signal you have applied to the controller.
Range
Input Sensor Type
5. Press and hold the enter key for at least 5 seconds and the parameter on the PV display will changed
form L o C A to H i C A . The low calibration value is now written into the controller’s non-volatile memory.
0
J
-50°C~1000°C
-58°F~1830°F
1
K
-50°C~1370°C
-58°F~2498°F
2
T
-270°C~400°C
-454°F~752°F
6. Apply the high input signal to the controller which corresponds to the range you are using.
3
E
-500°C~750°C
-58°F~1380°F
7. Use up and down key to adjust the SV display to match the input signal you have applied to the controller.
4
B
0°C~1800°C
32°F~3272°F
5
R
0°C~1750°C
32°F~3182°F
6
S
0°C~1750°C
32°F~3182°F
7
N
-50°C~1300°C
-58°F~2372°F
8
PT 100 DIN
-200°C~500°C
-392°F~932°F
9
PT 100 JIS
-200°C~500°C
-392°F~932°F
10
LINEAR
-1999~9999
-1999~9999
: Low Limit of range. Set to a value lower than the SV and PV will ever display. Note that the low
limit of the arange must be within the minimum limits specified for the type of input selected. For example: If, in the previous parameter setting (“tYPE”), you select a type J input, then the lowest possible
limit of range would be –85°. Span is defined as the difference between H i L t and L o L t .
: High Limit of range. Set to a value higher than the SV and PV will ever display. Note that
the high limit of the range must be within the maximum specified limits for the type of input selected. For example: If, in the previous parameter setting (“tYPE”), you select a type J input then the
highest possible limit of range would be 1830 °F. Span is defined as the difference between H i L t
and L o L t .
Page 6 VT-4810
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(V3) 12-2-98
8. Press and hold the enter key for at least 5 seconds and parameter on the PV display will change from
H i C A to S P . The low calibration value is now written into the controller’s non-volatile memory.
9. Input a signal midway between the low and high calibration signals previously applied and verify that the
display matches the input signal. Repeat the above procedure if necessary.
3.
: Autotuning selection.
AUTOTUNE
The autotune program may be initiated
• During initial set-up
• When the setpoint is changed substantially from the previous autotune result
• When the control result is unsatisfactory
Autotuning the controller: In order to automatically set the values for Proportional Band (PB), Integral
(Reset) time (ti), and Derivative (Rate) time (td), first adjust the controller’s setpoint (SV) to the desired
value. Make sure that the value for Proportional Band (PB) is NOT zero (zero initializes ON/OFF control). Also, check that the following parameters are set correctly for your application: Cycle Time (Ct),
input sensor (typE), and low/high limit (lolT and HilT).
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VT-4810 Page 7
10 .
11.
12.
: EroP Alarm 1 Output 1
Off
Off
On
2
On
Off
3
On
On
: Processes variable offset permits the user to offset the PV indication from the actual of measured PV. For example, if the thermocouple used is producing readings 2° higher than the actual temperature across the range, the user can eliminate the 2° difference by keying “–2”. Overall range of the
setting is –500 to +500. Default = 0.
CALIBRATION LEVEL (LEVEL 4)
1.
: Low calibration value.
2.
: High calibration value.
WARNING!! NEVER ENTER THIS PROCEDURE UNLESS YOU HAVE APPROPRIATE CALIBRATION
EQUIPMENT. THIS PROCEDURE SHOULD ONLY BE PERFORMED BY A TRAINED TECHNICIAN.
1. Press both scroll and enter key simultaneously for 5 seconds, then release. Repeat above operation until
L o C A appear on the PV display.
2. Remove the sensor from the controller’s input terminals and connect a Thermocouple of RTD simulation
signal to the controller’s input terminals. For a process DC input, use a 4 to 20 mA or 1 to 5 V DC signal,
depending on the input type of controller.
3. Apply the low input signal to the controller which corresponds to the range you are using i.e., for
thermocouple input, 0°C would be applied to the controller.
: Input Type selection. Select a correct type in accordance with the input connection.
Type
15.
Off
1
: Address of the controller for serial communication. This parameter provides an identity code for
the RS-485 communication interface. Note that it is not allowable to set the same Address value for
controllers communicating with the same computer to prevent line contention problems. If the controller
does not have the RS-485 interface, this parameter can be neglected. Setting range is 0 to 31.
The VT-4810 can only be operated in local mode as it does not have a serial communication option.
13.
14.
0
Error protection. Defines protection mode for the status of control
and alarm outputs to ensure a safe condition if the sensor fails.
4. Use up and down key to adjust the SV display to match the input signal you have applied to the controller.
Range
Input Sensor Type
5. Press and hold the enter key for at least 5 seconds and the parameter on the PV display will changed
form L o C A to H i C A . The low calibration value is now written into the controller’s non-volatile memory.
0
J
-50°C~1000°C
-58°F~1830°F
1
K
-50°C~1370°C
-58°F~2498°F
2
T
-270°C~400°C
-454°F~752°F
6. Apply the high input signal to the controller which corresponds to the range you are using.
3
E
-500°C~750°C
-58°F~1380°F
7. Use up and down key to adjust the SV display to match the input signal you have applied to the controller.
4
B
0°C~1800°C
32°F~3272°F
5
R
0°C~1750°C
32°F~3182°F
6
S
0°C~1750°C
32°F~3182°F
7
N
-50°C~1300°C
-58°F~2372°F
8
PT 100 DIN
-200°C~500°C
-392°F~932°F
9
PT 100 JIS
-200°C~500°C
-392°F~932°F
10
LINEAR
-1999~9999
-1999~9999
: Low Limit of range. Set to a value lower than the SV and PV will ever display. Note that the low
limit of the arange must be within the minimum limits specified for the type of input selected. For example: If, in the previous parameter setting (“tYPE”), you select a type J input, then the lowest possible
limit of range would be –85°. Span is defined as the difference between H i L t and L o L t .
: High Limit of range. Set to a value higher than the SV and PV will ever display. Note that
the high limit of the range must be within the maximum specified limits for the type of input selected. For example: If, in the previous parameter setting (“tYPE”), you select a type J input then the
highest possible limit of range would be 1830 °F. Span is defined as the difference between H i L t
and L o L t .
Page 6 VT-4810
Texmate, Inc. Tel. (760) 598-9899
(V3) 12-2-98
8. Press and hold the enter key for at least 5 seconds and parameter on the PV display will change from
H i C A to S P . The low calibration value is now written into the controller’s non-volatile memory.
9. Input a signal midway between the low and high calibration signals previously applied and verify that the
display matches the input signal. Repeat the above procedure if necessary.
3.
: Autotuning selection.
AUTOTUNE
The autotune program may be initiated
• During initial set-up
• When the setpoint is changed substantially from the previous autotune result
• When the control result is unsatisfactory
Autotuning the controller: In order to automatically set the values for Proportional Band (PB), Integral
(Reset) time (ti), and Derivative (Rate) time (td), first adjust the controller’s setpoint (SV) to the desired
value. Make sure that the value for Proportional Band (PB) is NOT zero (zero initializes ON/OFF control). Also, check that the following parameters are set correctly for your application: Cycle Time (Ct),
input sensor (typE), and low/high limit (lolT and HilT).
(V3) 12-2-98
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 7
To initiate the autotune, press and hold the SCROLL key for at least 5 seconds until the right-most decimal point on the PV display begins flashing.
3.
0
*4
1
*5
2
When autotune is complete, the right-most decimal will cease flashing. The new P, I, and D values willnow be stored in nonvolatile memory. Adjustments can now be made manually if desired.
To abort an autotune process, simply press and hold the SCROLL key again for 5 seconds until the decimal stops flashing.
To ensure satisfactory autotune operation, it is important that the span (the difference between LoLt and
HiLt) be set carefully since 10% of this difference will determine the autotune position in 0, 2, and 4 below.
1. The controller will autotune at 10% of span below setpoint. After the autotune cycle is complete, the
process value will then rise to setpoint.
6. Every time the controller is switched on, the controller will autotune at set- point value. Note: The temperature will rise above setpoint during the autotune cycle in this model
4.
Process high alarm
A1SP
Process low alarm
8
On-timer
9
Off-timer
10
Event-On timer
11
Event-Off timer
A1SP
TIME ON
SP
TIME OFF
SP
OFF TIME OFF
SP
ON TIME ON
SP
A1SP A1SP
: Hysteresis of alarm 1. Setting range 0.0 to 25.5% of controllers Span. This parameter is used
to eliminate relay "chatter".
5.
: Control output action. Set to 0 for cooling (direct) action or 1 for heating (reverse) action.
6.
: Unit of process value. Select the correct unit for the process. Set to 0 for degree F, 1 for degree
C and 2 for other linear process.
7.
AUTO/MANUAL CONTROL MODES
Deviation low alarm
12
Deviation band high alarm
14
SP–A1SP SP SP+A1SP
A1SP A1SP
13
Deviation band low alarm
15
SP–A1SP SP SP+A1SP
Note: modes 4,5,6,7,14, and 15 are with standby sequence.
2. The controller will autotune at the setpoint. Note: The temperature will rise above the setpoint during the
autotune cycle in this mode.
5. Every time the controller is switched on, the controller will autotune at 10% of span below setpoint. After
the autotune cycle is complete, the process value will then rise to setpoint.
A1SP
SP
SP+A1SP
A1SP
SP
SP+A1SP
Deviation high alarm
*6
3
*7
Autotune teaches the controller the main characteristics of the process. It learns by cycling the output on
and off. The result are measured and used to calculate optimums PID values which are automatically
entered into nonvolatile memory. After two oscillatory cycle of ON/OFF control, the controller performs PID
control to verify the results.
3. For the first time only, when the controller is switched on, the controller will autotune at 10% of span below
setpoint. After the autotune cycle is complete, the process value will then rise to setpoint.
4. For the first time only, when the controller is switched on, the controller will autotune at the setpoint. Note:
The temperature will rise above the setpoint during the autotune cycle in this mode.
: Alarm 1 function. There are 16 modes for the alarm function, as per the table below.
:
AUTOMATIC CONTROL
In auto mode, which is the default mode, the controller automatically adjusts the output variable in accordance with the PID algorithm to reach and maintain the desired setpoint. Auto mode is the normal mode of
operation, and may be set for P, PI, PD, PID or ON/OFF control.
dp
Decimal
0
None
1
1XX•X
2
1X•XX
3
1•XXX
Decimal Point selection. This parameter defines the position of the decimal
point on the process value and setpoint.
MANUAL CONTROL
Manual control is usually used for testing purposes and allows the user to drive the outputs manually
between 0.0 to 100%. To access the manual mode, press and hold the ENTER key for 4 seconds until either
the right-most decimal point on the SV display begins flashing. The controller's output percent will now
appear on the SV display.
To return to AUTO mode from MANUAL mode, press and hold the ENTER key for 4 seconds again until the
decimal point turns off. The setpoint again appears on the SV display.
8.
: Proportional cycle time of output 1. The value can be set from 0 to 100 seconds. Set to 1 second for pulse voltage output and 0 second for 4~20 mA output. Set the value to 30 seconds or longer
is possible to help prolong the life of the relay contacts.
9.
: Hysteresis (dead band) for ON/OFF control. User can set a range from 0.0 to 25.5% of SPAN.
(used to avoid relay chatter)
Page 8 VT-4810
(V3) 12-2-98
Texmate, Inc. Tel. (760) 598-9899
(V3) 12-2-98
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 5
CONTROL PARAMETER LEVEL (LEVEL 2)
1.
: Proportional band variable has a setting range from 0.0 to 100.0% of the controller's span. This
value is automatically calculated by activating the Autotune function. If desired, the user can later adjust
this parameter to better suit the application. Set to zero for ON/OFF control action.
2.
: Integral time (Reset) has a setting range from 0 to 3600 seconds. This value is automatically calculated by activating the Autotune function. If desired, the user can later adjust this parameter to better suit
the application. Set to zero if intergral action is not required.
3.
: Derivative (Rate) has a setting range from 0 to 3600 seconds. This value is automatically calabrated by activating the auto tune function. Set to zero, if desired the user can later adjust this perameter to better suit the application.
RAMP/SOAK DWELL
The VTR Series controller can operate as a fixed setpoint controller or as a single stage Ramp and Soak
Controller upon power-up. Ramp and Soak permits the user to limit the rate at which the controller travels
from starting point to setpoint. Also, the Alarm 1 relay can be configured to perform a “Dwell” function. Ramp,
Soak, and Dwell will be explained further below.
RAMP FUNCTION
If the parameter “rAmP” is set to a value other than “0”, the controller will perform a programmed ramp. The
process will travel twards the setpoint at a programmed rate. Rate settings range between 0.0 and 100.0
degrees per minute.
RAMP and SOAK FUNCTION
If the “AlFu” parameter is set to a “10”, the alarm 1 relay contact will be de-energized at start-up and will
become energized after the elapsed time, which the user programs, has timed-out.
CONFIGURATION LEVEL (LEVEL 3)
1.
: Remote/Local mode selection. Set to 0 for local mode or 1 for remote mode. In remote mode,
the parameters can not be changed by the keypad on the front panel. Only a connected PC can change
the controller's parameters. The VT-4810 can only be operated in local mode as it does not have a serial communication option.
2.
: Parameter Lock. Permits the user to lock-out level parameters that are not necessary or not
used. See below, and page 10.
Parameter
Lock Code #
DWELL FUNCTION
If the “AlFu” parameter is set to a “9”, the Alarm 1 relay contact will be deenergized at start-up and de-energized after trhe elapsed time, which the user programs, has timed-out.
Parameters that are adjustable in
Level 1
Level 2 Level 3 Level 4
1
SP1, ramp, A1SP (time)
All
All
All
0
SP1, A1SP (time)
All
All
All
2
SP1, oPoF, A1SP (time)
All
All
All
3
SP1, ramp, oPoF, A1SP (time)
All
All
All
4
SP1, A1SP (time)
All
All
None
5
If the power supply or control output of the controller is connected to the Aloarm 1 contacts, the controller
will operate as “guaranteed” soak controller. In other words, the controller will pause the timer if the controller deviates from setpoint (after the SV has been initially reached); once the setpoint is again matched,
the timer resumes. This ensures that the controller will soak at the desired temperature for the programmed
amount of time.
NOTE: The difference between DWELL and SOAK is that DWELL does NOT stop the timer clock when the
PV devates from the SV (after the SV has initially been reached) but the SOAK function does stop the clock
ensuring or “guaranteeing” a soak right at the desired temperature for the entire programmed time.
ERROR MESSAGE
ALARM FUNCTION
A/D converter damage
SP1, ramp, A1SP (time)
All
All
None
8
SP1, oPoF, A1SP (time)
All
All
None
7
SP1, ramp, oPoF, A1SP (time)
All
All
None
8
SP1, A1SP (time)
All
None
None
9
SP1, ramp, A1SP (time)
All
None
None
10
SP1, oPoF, A1SP (time)
All
None
None
11
SP1, ramp, oPoF, A1SP (time)
All
None
None
12
SP1, A1SP (time)
None
None
None
13
SP1, ramp, A1SP (time)
None
None
None
14
SP1, oPoF, A1SP (time)
None
None
None
15
SP1, ramp, oPoF, A1SP (time)
None
None
None
Page 4 VT-4810
Texmate, Inc. Tel. (760) 598-9899
(V3) 12-2-98
ON
SP
Incorrect operation of autotune procedure
6
TIME
On-timer
Sensor break error
Checksum error, value in memory may
have changed accidentally
9
TIME
Off-timer
OFF
SP
10
Event-On timer
11
Event-Off timer
OFF
TIME
OFF
SP
ON
TIME
ON
SP
Note: modes 4,5,6,7,14 and 15 are with standby sequence.
(V3) 12-2-98
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 9
PARAMETERS FLOWCHART
CONNECTION AND WIRING
BEFORE WIRING, VERIFY THE CONTROLLER LABEL FOR CORRECT MODEL NUMBER AND OPTION.
Hold for
4 sec.
Level 3
Proportional
Band
Integral Time
Output
Offset
Derivative
Alarm or
Set Point
Time
Remote/
Local
Hold for
4 sec.
Program Lock
Alarm Function
VT-4810 Rear View
1
CONTROL OUTPUT
Lo Calibration
Value
85~265 VAC
6
7
8
9
10
1
2
3
4
5
B
B
C
Hi Calibration
Value
Auto Tuning
Modes
–
NC
NO
+
Ramp
Rate
Hold for
4 sec.
Level 4
+
Normal
Process
Variable
Display
Level 2
–
Level 1
ALARM
Alarm Hysteresis
A
Control Action
Units °F/°C
Main input: The controller operates on 85~265 VAC 50/60 Hz.
Power should be connected via a 2 Amp fuse.
2. Sensor input: Do not run sensor cable adjacent to power carrying
conductors. The correct type of thermocouple extension lead wire
or compensating cable must be used. Ensure that the polarity of the
input is correct.
3. Control output: Different types of output may be installed in the
controller. Be sure that the correct output device for your application
is installed. Available output devices are:
• 4~20 mA or 0~20mA, Maximum load 500 ohms.
• 1~5 V, 0~5 V, 0~10 V.
• Pulsed voltage 24 V DC at 100 mA max to drive SSR.
• Relay 3A/240 VAC maximum, resistive load.
4. Alarm output: The alarm output is via a relay contact. Maximum
contact rating is 10 Amps.
CONFIGURATION AND PARAMETER SETTING
Decimal
All parameters are structured in four levels for easy programmability.
Cycle Time
Level 1.
Level 2.
Level 3.
Level 4.
Hysteresis
Operation level
Control parameter level
Configuration level
Calibration level
Error Protection
OPERATION LEVEL (LEVEL 1)
Address
1.
: Set-point Variable. This parameter is the desired target of the process. It can be adjusted within the range defined by Low Limit value and High Limit value.
2.
: Ramp rate. This forces the process to warm up (or cool down) with a predetermined rate when
power is applied. Set this parameter to zero if no ramp is needed. The process will then warm up (cool
down) with maximum speed. Ramp rate can be set in the range of 0.0 to 100.0 °C/min.
3.
: Output offset value for manual reset. For those systems, when it is desired to perform manual
reset control by setting integral time (ti) to zero. This allows the user to compensate for the deviation
between PV and SV.
4.
: Alarm 1 setpoint value. This sets the level at which the alarm 1 will operate if A 1 F u is selected for alarm function. If A 1 F u is set to a value of 8,9,10 or 11 for the timer function, this parameter will
be disabled.
5.
: Dwell time. The range is from 0 to 9999 minutes. This parameter is available only when the
A 1 F u is set to timer function.
Process Offset
Input Type
Low Limit of Range
Hi Limit of Range
Page 10 VT-4810
Texmate, Inc. Tel. (760) 598-9899
(V3) 12-2-98
(V3) 12-2-98
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 3
This manual contains information for the installation and operation of Texmate VT4810 auto-tuning microprocessor based controller.
This controller is a “on off” or “proportional plus integral plus derivative” (PID) controller. The facilities include
a wide range of inputs (T/C, RTD, LINEAR), auto/manual/PID, and ramp/soak function. The front panel is
equipped with two 4-digit displays showing process and setpoint value at a glance. The sensor types, alarm
modes, control parameter, unit, resolution, auto/manual mode, range all can be selected by the four touch
keys on the front panel. The auto-tuning facility provides a fast method of setting up the control parameters
with minimal overshoot.
PARAMETER PROGRAMMING
Parameter
Default
Setting
Programmed
Setting
User Setting
User Setting
0.0
0.0
10
INSTALLATION
0.0
PANEL MOUNTING
• Prepare a cutout in your panel of 45 mm by 45 mm. The panel on which the controller will be mounted
may be up to 10 mm thick.
• Remove plastic mounting bracket on VT4810. Slide meter into cutout. Replace mounting bracket, tighten
screws. Do not tighten the mounting screws too tightly since this can bow the controller housing.
240
40
0
3
FRONT PANEL DESCRIPTION
1
PV:
SV:
Process Variable
a) Displays the actual measurement of the input sensor.
b) Displays the parameter index code.
c) Displays Error messages.
Setting Variable
a) Displays the set-point variable.
b) Displays the parameter data.
0.1
P
V
PV: Display
AT: Indicator
S
V
SV: Display
M: Manual Indicator
Alarm LED
Control Output LED
OUT
ALM
Scroll Key
ALM: Alarm 1 LED
a) LED is lit when Alarm is energized.
b) LED flashes when timer is activated and counting down.
1
0
Enter Key
E
TEXMATE
1
0
VT-4810
0.1
Up Key Down Key
2
OUT: Control Output LED: LED is lit when Control Output 1 is on.
0
AT:
Autotuning LED: Extreme right hand decimal of PV display flashes while the controller is autotuning.
0
M:
Manual Indicator: Extreme right hand decimal of SV display flashes when controller is in manual mode.
1
Scroll Key: While programming the controller, you can move from one programmable parameter to
the next by pressing the Scroll Key once. Also, to activate an autotuning session, press and hold
down this key for 5 seconds.
-50
1370
Up Key: Increases the setpoint value and changes the parameter data when programming.
0
Down Key: Decreases the setpoint value and changes the parameter data when programming.
1000
Enter Key: During normal operation, pressing the Enter Key permits the user to view the controller
output action in percentage (0~100). Pressing and holding this key for 5 seconds puts the controller
into manual operation. Press this key from any other mode to return to the standard SV value.
1
Level key: The scroll and enter keys are often used together to move from one level to the next
during programming. Both these keys should be pressed and held down for 5 seconds to move to
the next level.
Page 2 VT-4810
Texmate, Inc. Tel. (760) 598-9899
(V3) 12-2-98
(V3) 12-2-98
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 11
CASE DIMENSIONS
45 mm
(1.77")
VT-4810 AUTO TUNE
PID CONTROLLER
45 mm
(1.77")
P
V
48 mm
(1.89")
S
V
100 mm
(3.95")
45 mm
(1.77")
Panel Cutout
Microprocessor Based PID Controller with Ramp and Soak
ALM
OUT
E
45 mm
(1.77")
10
VT-48
ATE
TEXM
48 mm
(1.89")
6 mm
(.24")
FEATURES
• Single segment RAMP/SOAK function
• Selectable P,PI,PID control modes
• Selectable auto tune or manual PID
ORDERING INFORMATION
• Selectable display resolution for 1 or 0.1°
VT-4810 / ___ ___
• Wide range power supply
• Selectable alarm relay modes
T= Thermocouple input
R= Control output is relay 5 A / 240 V resistive load
D= RTD input
P= Control output is pulsed 24 VDC (100 mA max)
L= Linear 4 to 20 mA input
X= Control output is 4 to 20 mA (max load 500 Ω)
C= Custom linear input
Y= Control output is 0 to 20 mA (max load 500 Ω)
V= Voltage output 0 to 5 / 1 to 5 / 0 to 10 VDC
C= Custom voltage or current output
WARRANTY
Texmate warrants that its products are free from defects in material and workmanship under normal use and service for a period of one year
from date of shipment. Texmate’s obligations under this warranty are limited to replacement or repair, at its option, at its factory, of any of the
products which shall, within the applicable period after shipment, be returned to Texmate’s facility, transportation charges pre-paid, and which
are, after examination, disclosed to the satisfaction of Texmate to be thus defective. The warranty shall not apply to any equipment which shall
have been repaired or altered, except by Texmate, or which shall have been subjected to misuse, negligence, or accident. In no case shall
Texmate’s liability exceed the original purchase price. The aforementioned provisions do not extend the original warranty period of any product
which has been either repaired or replaced by Texmate.
USER’S RESPONSIBILITY
We are pleased to offer suggestions on the use of our various products either by way of printed matter or through direct contact with our
sales/application engineering staff. However, since we have no control over the use of our products once they are shipped, NO WARRANTY
WHETHER OF MERCHANTABILITY, FITNESS FOR PURPOSE, OR OTHERWISE is made beyond the repair, replacement, or refund of purchase price at the sole discretion of Texmate. Users shall determine the suitability of the product for the intended application before using, and
the users assume all risk and liability whatsoever in connection therewith, regardless of any of our suggestions or statements as to application
or construction. In no event shall Texmate’s liability, in law or otherwise, be in excess of the purchase price of the product.
Texmate cannot assume responsibility for any circuitry described. No circuit patent licenses are implied. Texmate reserves the right to
change circuitry, specifications, and prices without notice at any time.
Local Distributor Address
995 Park Center Drive • Vista, CA 92083-8397
Tel: (760) 598-9899 • Fax: (760) 598-9828
URL: http://www.texmate.com
Texmate, Inc. Tel. (760) 598-9899
1. INPUT
• Thermocouple: J,K,T,E,B,R,S,N
(IPTS68/DIN 43710)
• RTD: RTD (DIN 43760/BS 1904 or JIS)
• Linear Voltage: -10 to 60 mV configurable
with input attenuation
• Linear Current: 4 to 20 mA or 0 to 20 mA,
60 mV (max) voltage drop
• Range: User configurable
• Accuracy: ±2°C for T/C, ±0.2°C for RTD,
±0.05% for Linear input.
• Cold Junction Compensation: 0.1 % ambient typical.
• Input Impedance: 10M ohms for T/C, 100K
ohms for Linear Voltage, 2.7 Ohms for 0 to
20 mA or 4 to 20 mA inputs.
• Excitation Current for RTD: 0.2mA Max.
• Sample Rate: 4 readings / sec.
• Common Mode Rejection: 120 dB
• Normal Mode Rejection: 60dB
2. Control
• Proportional Band: 0.0 ~ 100.0 % of full scale
• Integral Time: 0 ~ 3600 Sec.
Texmate has facilities in Japan, New Zealand, Taiwan, and Thailand. We also
have authorized distributors throughout the USA and in 28 other countries.
Page 12 VT-4810
SPECIFICATIONS
(V3) 12-2-98
(V3) 12-2-98
• Derivative Time: 0 ~ 3600 Sec.
• Anti Reset Windup: Inhibit integral action
outside Proportional Band
• Manual reset: 0 to 100% of proportional band
• Hysteresis: 0.0 to 25.5% of full scale
• Ramp Rate: 0.0 ~100.0°C /minute
• Dwell: 0 ~9999 minutes
• On-Off: With adjustable hysteresis
• Cycle Time: 0 ~ 99 Seconds
• Control Action: Configurable for direct
(cooling) or reverse (heating) control
3. Output
• Relay: 5A/240 VAC resistive .
• Pulsed Voltage: Isolated 24 V DC 100 mA
(max) for SSR drive. On voltage 24 V. Off
voltage 3 V
• Current: Isolated 0 to 20 mA or 4 to 20 mA
Maximum load 500 Ω. Voltage
• Alarm: Relay output, Form A contact (SPST)
10A/240 VAC resistive
4. Power
• Rating: 85 ~ 265 VAC 50/60 Hz.
• Consumption: 5 VA maximum.
5. Environmental
• Operating Temperature: -10 ~ 50°C
• Humidity: 0 ~ 90 %
• Insulation: 20M ohms minimum @ 500 V DC
• EMC Emission: EN 50081-1:1992, EN
55022:1994
• EMC Immunity: EN 50082-1:1992, IEC 8012, IEC801-3, IEC 801-4:1988.
• Weight: 180g
Texmate, Inc. Tel. (760) 598-9899
VT-4810 Page 1
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