详细说明  标准信号隔离放大器 VariTrans® P 15000  knick

VariTrans® P 15000 The professional standard signal amplifier; with calibrated range selection and broad-range power supply   Product description   Image Typical applications   Facts   Product Line   Dimension drawings   Schematic diagram   Specifications   Downloads

The Task

Industrial applications require the transmission and conversion of different standard signals (0 ... 20 mA, 4 ... 20 mA and 0... 10 V) with high accuracy.


The Problems

Long transmission paths can cause potential differences that lead to errors in the measuring result. Furthermore different products would be required for different signals and supply voltages.


The Solution

The VariTrans® P 15000 isolation amplifier from Knick features excellent transmission quality combined with the calibrated standard signal switching using DIP switches and a broad-range power supply.


The Housing

At just 12.5 mm wide, the modular housing with pluggable screw terminals allows simple and fast assembly and prewiring of enclosures. Housings with fixed screw terminals are also available for extremely high mechanical loads.
The easy-to-open housing allows easy configuration of the input and output ranges and good protection against touch and unintended adjustment.


The Advantages

The analog transmission of the measuring signal with transformer isolation and the new digitally controlled measuring range selection guarantee almost perfect signal transmission:

• Gain error only 0.08 %
• Excellent pulse formation
• Extremely low residual ripple
• Maximum long-term stability and reliability


The Technology

A microcontroller monitors the control element settings and controls the calibrated range selection. Interference to the signal transmission – for example, due to contact resistances in the range switches – is thus ruled out.

Thanks to the VariPower® power supply, the devices can be used all over the world for all common supply voltages from 20 to 253 V AC/DC with almost any power supply. The extremely low power consumption and the related minimal self-heating significantly increase the reliability. That’s why we give a 5-year warranty.
 

Application examples

Facts

Flexible and highly accurate: calibrated range selection without complicated recalibration VariPower® 20 ... 253 V AC/DC broad-range power supply Extremely compact design: 12.5mm modular housing, up to 80 active isolators per meter of top-hat rail Fast and easy configuration: housing simple to open Pluggable screw terminals: simple, time-saving assembly and prewiring of enclosures 3-port isolation: protection against incorrect measurements or damage Maximum accuracy Individual test report following EN 10204 2.3 Protective separation according to EN 61140, protection against unpermitted high voltages Maximum reliability: no repair and failure costs 5-year warranty

Product line
Devices			Order no.	Order no.
			With pluggable	With fixed
	Input	Output	screw terminal	screw terminal
VariTrans® P 15000 with calibrated	0 ... 20 mA,	0 ... 20 mA,	P 15000 H1	P 15000 F1
input and output selection	4 ... 20 mA,	4 ... 20 mA,
	0 ... 10 V	0 ... 10 V
VariTrans® P 15000 with	0 ... 20 mA	0 ... 20 mA	P 15016 H1	P 15016 F1
fixed settings	0 ... 20 mA	4 ... 20 mA	P 15017 H1	P 15017 F1
	0 ... 20 mA	0 ... 10 V	P 15018 H1	P 15018 F1
	4 ... 20 mA	0 ... 20 mA	P 15026 H1	P 15026 F1
	4 ... 20 mA	4 ... 20 mA	P 15016 H1	P 15016 F1
	4 ... 20 mA	0 ... 10 V	P 15028 H1	P 15028 F1
	0 ... 10 V	0 ... 20 mA	P 15036 H1	P 15036 F1
	0 ... 10 V	4 ... 20 mA	P 15037 H1	P 15037 F1
	0 ... 10 V	0 ... 10 V	P 15038 H1	P 15038 F1
"Specific Test Report" included in delivery.
Power supply
20 ... 253 V AC/DC
Accessories
Test certificate according to KTA 3507				ZU 0659

	Dimension drawings and terminal assignments

Schematic diagram

 

Specifications
Input data
Inputs	0 ... 20 mA	Terminal-selectable/switchable (factory setting 0 ... 20 mA)
	4 ... 20 mA	or fixed settings (see Product line)
	0 ... 10 V
Input resistance	Current input	Voltage drop approx. 250 mV at 20 mA
	Voltage input	Approx. 1 Mohm
Overload	Current input	≤300 mA
	Voltage input	Voltage limitation with suppressor diode 30 V,
		max. permitted continuous current 30 mA
Output data
Outputs	0 ... 20 mA	Switchable (factory setting 0 ... 20 mA
	4 ... 20 mA	or fixed settings (see Product line)
	0 ... 10 V
	(transmission of negative measuring signals up to approx. –5 % of full scale)
Load	With output current	≤12 V (600 ohms at 20 mA)
	With output voltage	≤10 mA (1 kohm at 10 V)1)
Offset	20 µA or 10 mV
Residual ripple	<10 mVrms
Transmission behavior
Gain error	<0.08 % meas. val. (DC)
Cut-off frequency	>10 kHz – 3 dB, P 15000 F1/H1 switchable to <10 Hz –3 dB
Temperature coefficient 2)	0.005 %/K full scale (reference temperature 23 ºC)
Power supply
Power supply	20 ... 253 V AC / DC	AC 48 ... 62 Hz, approx. 2 VA
		DC approx. 0.9 W
Isolation
Galvanic isolation	3-port isolation between input, output and power supply
Test voltage	4 kV AC input against output against power supply
Working voltage	1000 V AC/DC with overvoltage category II and pollution degree 2 according to EN 61010-1
(basic insulation)	For applications with high working voltages, you should ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
Protection against	Protective separation according to EN 61140 by reinforced insulation in accordance with EN 61010-1.
electric shock	Working voltages up to 300 V AC/DC across input and output and power supply with overvoltage category II and pollution degree 2.
	For applications with high working voltages, you should ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
Standards and approvals
Surge withstand	5 kV 1.2 / 50 µs according to IEC 255-4
EMC 3)	EN 61326
Approvals	cUL:	File no. E 216767, Standards UL 3101-1, CSA-C 22.2-95, No. 10101-1
	GL:	No. 14593-99 HH
	KTA:	3507
Other data
MTBF4)	Approx. 91 years
Ambient temperature	Operation:	–10 ... +70 ºC
	Transport and storage:	–40 ... +85 ºC
Housing	Modular housing, width 12.5 mm, see dimension drawing for other measurements
	Pluggable screw terminals:	Type H1
	Fixed screw terminals:	Type F1
Protection class	IP 20
Mounting	Metal lock for mounting on 35-mm top-hat rail according to EN 50022
	See dimension drawings for conductor cross section
Weight	Approx. 150 g
1) Higher voltage output load on request
2) Average TC in specific working temperature range –10 ºC ... +70 ºC
3) Slight deviations are possible during interference
4) Mean Time Between Failures - MTBF - to EN 61709 (SN 29500). Conditions: stationary operation in well-tended rooms, average     ambient temperature 40 °C, no ventilation, continuous operation