GHM Messtechnik GmbH Sales Center International Schloßstraße 6 88453 Erolzheim Germany Fon +49-7354-937233-0 Fax -88 www.ghm-messtechnik.de info@ghm-messtechnik.de Product Information Features System Sources Analog signal isolation Digital signal isolation Voltage signals Current signals Applications Industrial measurement and control technology Test bench measurement Isolation of signals up to 2000 V Signal conditioning Signal filtering pi-ask-karten_e V1.25-00 1
GHM Messtechnik GmbH Sales Center International Schloßstraße 6 88453 Erolzheim Germany Fon +49-7354-937233-0 Fax -88 www.ghm-messtechnik.de info@ghm-messtechnik.de Product Information Functions and Benefits The modules provide isolated signal conversion and conditioning for automation and measurement applications. Each module has a 3-way isolation and offers flexible interference suppression with plug-in filters. These are designed as 4-pole Butterworth or Bessel filters. Other orders and characteristics are available on request. With isolating and filtering, the modules are best suited for interference suppression in measurement and control circuits, protection of SPCs and AD converters, galvanic isolation of line and signal circuits, as well as prevention of ground loops. Low-noise with a residual ripple of < 2 mv pp and an accuracy of 0,1 % makes the modules also best usable for data acquisition applications. Signal inputs and outputs are via BNC sockets resp. screw terminals on the front panel of the module and/or back panel of a 19 chassis/housing. The frequency response of a filter increases with the steepness between passband and stop-band. Here Butterworth has advantages over Bessel: Customer-specific adaptations can be provided in many ways for e.g. measurement ranges and gains. Filter Bessel is the better choice for square edge signals like rectangle pulses, as the signal is only marginally derogated: General Supply voltages Environmental temperature Signals Electric strength 19 plug-in unit Europe card size Height 3 U Width 5 U, 8 U Depth 160 mm 24 V DC or ± 15 V DC 0 C..50 C Input:, ± 20 ma Output: 3-way isolation, Digitized isolation (ASK-DP) Low noise 2000 V DC (1 s) (except ASK-DP) 600 V eff (permanent) Accuracy < 0.1 % Further data see individual modules 4- pole Butterworth filters show ringing for square edge signals, which can reach up to 11 %. 4- pole Bessel filters reach only up to 0.8 %, but separate not so sharply from passband to stop-band: 2 pi-ask-karten_e V1.25-00
GHM Messtechnik GmbH Sales Center International Schloßstraße 6 88453 Erolzheim Germany Fon +49-7354-937233-0 Fax -88 www.ghm-messtechnik.de info@ghm-messtechnik.de Product Information Module Overview Card Input Output Voltage Page Current RS 422 Plug-in Filter TTL ASK-44A 4 ASK-44E 5 ASK-44D 6 ASK-DP 140, DP 200 7 ASK-8 8 ASK Card Housings 9 Plug-in Filter 10 Standard Optional resp. Switchable Mistakes reserved, technical specifications subject to change without notice. pi-ask-karten_e V1.25-00 3
ASK-44A Block Diagram This Analog Card offers isolated signal conversion and filtering of 4 voltage or current signals. Signal outputs are via connectors at the front panel, signal inputs are fed through the card frame connector. Optionally signals can be amplified are attenuated. Inputs are on common ground, all outputs are isolated from each other. The card is also available as a version 2/4A with 2 inputs and 2 separate outputs each. Supply voltage 24 V DC ± 10 % Power consumption at nominal voltage (without sensor / without load) 100 ma Electrical isolation (3-way isolation) 2000 V DC (1 s) 600 V eff (permanent) Accuracy < 0.,1 % Cut-off frequency (standard / maximum) 10 khz / 30 khz Linearity (typical) 0.02 % Input Voltage Optional attenuation Optional gain Input resistance Input Current (optional) Input resistance Output Voltage Output range Load current Short proof Residual ripple @ f g = 10 khz ± 50 V ± 10 mv.. 10 MΩ ± 20 ma 50 Ω ± 10 ma yes typical < 1 mv eff Plug-in filter Standard frequencies in Hz 10, 30, 50, 100, 300, 500, 1 k, 3 k, 5 k, 10 k, 30 k 19 Unit, 3 U, 8 U (5 U, depending on version), depth 160 mm 1. 2. 3. 4. ASK-44A - - - - 1. Terminal BNC BNC sockets PHOE Phoenix screw terminals 2. Input V1 (standard) V2, ± 50 V V3 ± 1 V, YY Enter non-standard value ± 10 mv..10v A1 ± 20 ma 3. Output filter frequency (Hz) IMP Impedance converter O without filter XXX Enter standard value:10, 30, 50, 100, 300, 500,1k, 3k, 5k, 10k Enter non-standard value: 1..30k 4. Filter characteristics BW Butterworth 4th order BS Bessel 4th order Example: ASK-44A-BNC-V1-10k-BW 4 pi-ask-karten_e.odm V1.25-00
ASK-44E Block Diagram This Analog Card offers isolated signal conversion and filtering of 4 voltage or current signals. Signal inputs are via connectors at the front panel, optionally signals can be amplified are attenuated. Signal outputs are fed through the card frame connector. All inputs are isolated from each other, outputs are on common ground. The card is also available as a version 2/4E with 2 inputs and 2 separate outputs each. Supply voltage 24 V DC ± 10 % Power consumption at nominal voltage (without sensor / without load) 100 ma Electrical isolation (3-way isolation) 2000 V DC (1 s) 600 V eff (permanent) Accuracy < 0.1 % Cut-off frequency (Standard / Maximal) 10 khz / 30 khz Linearity (typical) 0.02 % Input Voltage Optional attenuation Optional gain Input resistance Input Current (optional) Input resistance Output Voltage Output range Load current Short proof Residual ripple @ f g = 10 khz ± 50 V ± 10 mv.. 1 MΩ ± 20 ma 50 Ω ± 10 ma yes typical < 1 mv eff Plug-in filter Standard frequencies in Hz 10, 30, 50, 100, 300, 500, 1 k, 3 k, 5 k, 10 k, 30 k 19 Unit, 3 U, 8 U (5 U, depending on version), depth 160 mm 1. 2. 3. 4. ASK-44E - - - - 1. Terminal BNC BNC sockets PHOE Phoenix screw terminals 2. Input V1 (standard) V2, ± 50 V V3 ± 1 V, YY Enter non-standard value ± 10 mv..10v A1 ± 20 ma 3. Output filter frequency (Hz) IMP Impedance converter O without filter XXX Enter standard value:10, 30, 50, 100, 300, 500,1k, 3k, 5k, 10k Enter non-standard value: 1..30k 4. Filter characteristics BW Butterworth 4th order BS Bessel 4th order Example: ASK-44E-PHOE-V1-10k-BS pi-ask-karten_e.odm V1.25-00 5
ASK-44D Block Diagram The Digital Card offers isolated conversion of RS 422 signals into a TTL signal. Outputs are via BNC sockets on the front panel: Each card has 4 x 2 tracks. Signal inputs are fed through the card frame connector. Supply voltage 24 V DC ± 10 % Power consumption at nominal voltage (without sensor / without load) 100 ma Electrical isolation 2000 V DC (1 s) (3-way isolation) 600 V eff (permanent) Channels 4 x 2 tracks Frequency Cut-off frequency Signal delay Slope Input Voltage Input resistance Input capacitance Over voltage protection Output Output range Short proof Residual ripple @ f g = 10 khz 1 MHz < 0.1 µs 25 ns RS 422 100 kω 22 pf ± 50 V TTL yes typical < 1 mv eff 19 Unit, 3 U, 8 U, depth 160 mm ASK-44D Type (Standard) Converting RS 422 signals into TTL signals Example: ASK-44D 6 pi-ask-karten_e.odm V1.25-00
ASK-DP 140, DP 200 DP 140 DP 200 Harmonic distortion (< 22 khz) < 0.1 % Plug-in filter Standard frequencies in Hz 10, 30, 50, 100, 300, 500, 1 k, 3 k, 5 k, 10 k, 20 k, 30 k, 50 k Block Diagram The DP Cards offers digitized electrical isolation of signals. The signal is digitized by a 16 bit AD converter, then isolated by a fast optocoupler, and finally transformed back to its analog value with a 16 bit DA converter. Internal sample rates are 140 resp. 200 khz. This technology assures extremely good characteristic values with regard to offset and accuracy drift, signal-to-noise ratio, and harmonic distortion factor. AD and DA converter pulses of several cards can be synchronized with a central clock on a master card version. DP 140 DP 200 Supply voltage ± 15 V DC ± 10 % Power consumption (without sensor / without load) ISO-DP ISO-DP Master Electrical isolation DC AC Isolation resistance + 100 / - 70 ma + 130 / - 75 ma 500 V 350 V > 1 x 10 12 Ω + 125 / -90 ma + 135 / -90 ma Accuracy (typical) 0.03 % Cut-off frequency (Standard / maximum) 10 khz / 20 khz 27 khz / 50 khz Linearity (typical) < 0.05 % Input Voltage optional current Resistance AC coupling (lower f g) ± 20 ma 20 MΩ 0.1 Hz ± 11 V ± 20 ma 20 MΩ 0.1 Hz Ranges/ Gain factors selectable with rotary switch on front panel Output Voltage range Reverse voltage up to Load current (short proof) Offset DC Offset drift (V=1) FSR/ C Gain drift (V=1) FSR/ C Residual ripple @ V=1 f g = 10 khz f g = 20 khz Signal-to-noise-ratio V=1, 10 V=100 Crosstalk 10 mv V = 100 1,0 V V = 10 10 V V = 1 ± 20 V ± 12 ma < 7 mv 4 ppm 9 ppm ± 11 V ± 20 V ± 12 ma < 7 mv 6 ppm 32 ppm < 0.5 mv eff < 0.5 mv eff > 90 db > 90 db > 80 db > 77 db > 120 db 19 Unit, 3 U, 5 U, depth 160 mm s 1. 2. 3. 4. 5. ASK-DP - - - - / - / 1. Sample rate 140 Sample rate 140 khz 200 Sample rate 200 khz 2. Type Synchronization M Master for synchronization 3. Input V1 (standard) A1 ± 20 ma 4. Output filter frequency (Hz) XXX Enter standard value:10, 30, 50, 100, 300, 500,1k, 3k, 5k, 10k, 30k, 50k Enter non-standard value: 1..50k 5. Filter characteristics BW Butterworth 4th order BS Bessel 4th order Example: ASK-DP-200-V1-30k BS pi-ask-karten_e.odm V1.25-00 7
ASK-8 Block Diagram The ASK-8 Card offers electrical isolation of 8 channels to the output side. It can be also used as signal distribution card using one input channel only. Inputs and outputs are fed through the card frame connector. The outputs are on common ground. Optionally 8 LEDs for indication of a different cut-off frequency than 5 khz can be mounted on the front panel. Supply voltage ± 15 V DC ± 10 % Power consumption at nominal voltage (without sensor / without load) 170 ma Electrical isolation 2000 V DC (1 s) 600 V eff (permanent) Accuracy 0.03 % Cut-off frequency (Standard / Maximum) 5 khz / 30 khz Linearity (typical) 0.02 % Input Gain (optional) 0.5..2 Output Output range Load current Short proof Residual ripple @ f g = 5 khz without filter ± 10 ma yes typical < 4 mv pp typical < 10 mv pp Plug-in filter Standard frequencies in Hz 10, 30, 50, 100, 300, 500, 1 k, 3 k, 5 k, 10 k, 30 k 19 Unit, 3 U, 5 U, depth 160 mm 1. 2. 3. 4. ASK-8 - - - - 1. Type V 2 2x 4 channels isolated FF Channel assignment firm, gain firm FV Channel assignment firm, gain variable VV Channel assignment variable, Gain variable 2. Measurement ranges G2 Non-standard value: 2 3. Output filter frequency (Hz) XXX Enter standard value:10, 30, 50, 100, 300, 500,1k, 3k, 5k, 10k Enter non-standard value: 1..30k 4. Filter characteristics BW Butterworth 4th order BS Bessel 4th order Example: ASK-8-FF-10k-BW 8 pi-ask-karten_e.odm V1.25-00
ASK-Card Housings 1. 2. 3. ASK-44G - - - 1. Housing type VR 19 chassis VT desktop housing 2. Number of plug-in units) Input resp. output via BNC sockets of back panel 4 for 4 plug-in units 8 for 8 plug-in units 10 for 10 plug-in units 3. Type of power supply B DC 9..36 V N AC 110..230V, 50 Hz Example: 61-VT-16-ISO-DP-N 1. 2. 3. ASK-DPG - - - Various chassis and desktop housings in 19 technology are offered to accommodate the ISO-Cards. Customer-specific versions can be provided in many ways for the number of cards and needed power supplies. A wide-range power supply is available for mobile applications. Supply voltage 110..230 V AC 9..36 V DC Switch-mode power supply Power supply optional linear power supply BNC socket or screw terminal on Input front panel and/or back panel Output depending on type of card Desktop housing 28..84 U Chassis 84 U 19 housing Width 21, 28, 63, 84 U, for chassis 84 U Height 3 U (optional 4 U) Depth desktop housing 316 mm (256..496 mm) Depth chassis 340 mm (240..460 mm) 1. Housing type VT 19 desktop housing 2. Number of plug-in units 4 8 16 3. Type of power supply B DC 9..36 V N AC 110..230V, 50 Hz Example: ASK-DPG-16-N 1. 2. 3. ASK-8G - - - 1. Housing type VR 19 chassis VT 19 desktop housing 2. Number of plug-in units 2 for 2 units 2 U chassis, BNC sockets 8 for 8 units 3 U chassis, BNC sockets 16 for 16 units 3 U chassis, BNC sockets 3. Type of power supply N AC 110..230V, 50 Hz Example: ASK-8G-VR-16-N pi-ask-karten_e.odm V1.25-00 9
Plug-in Filter Frequency response Bessel filter The filters are designed for flexible interference suppression of signals. The cut-off frequency of a TSA Module can be easily changed by inserting another filter. Besides the frequency another characteristics can be selected as well. By combination of 2 filters, an 8-pole filter can be created. Supply voltage by TSA Module (± 15 V) Standard frequencies in Hz 10, 30, 50, 100, 300, 500, 1 k, 3 k, 5 k, 10 k Accuracy filter frequency < ± 15 % Residual ripple < 2 mv pp Low-pass, High-pass Butterworth (Band pass) Bessel (others on request) Order Standard 4 Combination of 2 filters 8 Frequency response Butterworth filter 1. 2. SFIL - - 1. Filter frequencies (Hz) Enter standard values:10, 30, 50, 100, 300, 500,1k, 3k, 5k, 10k Enter non- standard value: 10..30k 2. Filter characteristics BW Butterworth 4th order BS Bessel 4th order Example: SFIL-20k-BS 10 pi-ask-karten_e.odm V1.25-00