General Specifications GS 77J04H0-0E Model MH Isolator (Free Range Type) General The MH is a plug-in type isolator that converts DC current or DC voltage signals into isolated DC current or DC voltage signals I/O range setting, selection of square root extractor and breakpoint linearization (breakpoint setting), I/O adjustment, I/O monitoring, and loop back test can be made using the optional Parameter Setting Tool (VJ77) or Handy Terminal (JHT00) The operation indicating lamp shows the operation status, abnormalities in a setting etc I/O adjustment can be made using the switches on the front panel of the MH without a setting tool such as Handy Terminal Model and Suffix Codes Model : output MH -0-0 / Power supply : -40V DC (Operating range: to 48 V) : 00-40 V AC/DC (Operating range: 8 to 4 V) A: 0 to +0 ma DC (with 0 Ω receiving resistor) (Note) B: 0 to +0 ma DC (with 00 Ω receiving resistor) (Note) : 0 to +0 V DC : to + V DC Z: (Custom order) Customized current signals or voltage signals signal A: 0 to 0 ma DC Span is ma or more B: 0 to ma DC Span is ma or more : 0 to +0 V DC Span is 0 V or more : 00 to +00 mv DC Span is 0 mv or more Z: (Custom order) Customized current signals or voltage signals Breakpoint linearization 0: Not available : Available Optional specification /SN: Without socket /R00: With 00 Ω receiving resistor (Note) /R0: With 0 Ω receiving resistor (Note) Note: Specify /R00 or /R0 when using different receiving resistor from the receiving resistor specified in the input signal suffix code A or B Ordering Information Specify the following when ordering Model and suffix codes: eg MH-0-AA00 Input range: eg 4 to 0 ma DC range: eg 4 to 0 ma DC Specify a lowcut point when with square root extractor is required: eg Lowcut point 04% The isolator will be shipped with a lowcut point of 0% if no specification of lowcut point Specify breakpoints in Work Sheet when linearization is required The isolator will be shipped with a specified resistor if the input signal is current input and a receiving resistor of the optional specification is specified Input/ Specifications : DC current or DC voltage signal setting range: suffix code A B Setting range ±0 ma DC Span is ma or more ±0 ma DC Span is ma or more (± ma DC Span is ma or more for the optional specification /R0 ) ±0 V DC Span is V or more ± V DC Span is mv or more Input resistance: Current input: 0 Ω for the suffix code A 00 Ω for the suffix code B Note: A specified resistor is applied if a receiving resistor of the optional specification is specified Voltage input: MΩ for the suffix code (800 kω during power off) MΩ for the suffix code (0 kω during power off) Maximum allowable input: Current input: 40 ma DC or less for 0 Ω receiving resistor 70 ma DC or less for 00 Ω receiving resistor Voltage input: ± V DC or less GS 77J04H0-0E Copyright Jul 00 st Edition Jul 00
Square root extractor: ted against the result of extracting square root of input Y= X- (input 0 % value) (output span)+(output 0 % value) input span Lowcut point setting range: 0 to 00% of input, setting available by 0% notch characteristic: for lowcut point or less is cramped with straight line proportional to input signal (Y) 0 Y=X Hysteresis (approx 0% fixed) (X) Lowcut point signal: point of DC current or DC voltage signal signal setting range: signal suffix code Setting range A 0 to 0 ma DC Span is ma or more B 0 to ma DC Span is ma or more ±0 V DC Span is 0 V or more ±00 mv DC Span is 0 mv or more Allowable load resistance: Voltage output: kω or more for ± V DC 0 kω or more for ±0 V DC 0 kω or more for ±00 mv DC Current output: (V)/max output (A) (Ω) or less Linearization: Breakpoint: Up to points (Set a relationship between input and output with % value over the span) Allowable setting range of breakpoint: to +0% (both input and output) With 4 significant digits; can be set to the second place of a decimal point Set breakpoints according to the following For input: 0% X0 X X Xn Xn 00% For output: 0% Y0 to Yn 00% signal Yn Yn- Xn- Xn Adjustment range: Input adjustment: ±% of span or more (Zero/Span) adjustment: ±% of span or more (Zero/ Span) All Rights Reserved Copyright 00, Yokogawa Electric Corporation Standard Performance Accuracy rating: ±0% of span However, the accuracy is not guaranteed for output levels less than 0% of the span of a 0 to X ma output range type For square root extractor input, ±% of span when the input is % or less The accuracy is limited according to the input/output range settings Accuracy Calculation Accuracy = Input accuracy + accuracy (%) Accuracy is obtained by totalizing the expression () for input accuracy and the expression () for output accuracy However, ±00% is applied if a value obtained from the expression () or () is less than ±00% For current input, add the error of receiving resistor ±0% to the input accuracy Input accuracy = ±00% a/b expression () suffix code A * B * Input range (Range converted into voltage) ± V DC Outside of ± V DC and within ±0 V DC ±0 mv DC Outside of ±0 mv DC and within ±00 mv DC Outside of ±00 mv DC and within ±0 V DC Outside of ±0 V DC and within ± V DC Accuracy calculation condition (V) 4(V) 0(mV) 40(mV) 0(V) 08(V) Input span (Span converted into voltage) *: When input signal is current, the values converted into voltage by the receiving resistor are applied to the input range and input span accuracy = ±00% a/b expression () signal suffix code A B range 0 to 0 ma DC 0 to ma DC ± V DC Outside of ± V DC and within ±0 V DC ± mv DC Outside of ± mv DC and within ±00 mv DC GS 77J04H0-0E st Edition Jul9, 00-00 a 0(mA) (ma) (V) 4(V) 0(mV) 40(mV) b Accuracy calculation condition a b span If or more is set for the line segment gain of linearization, multiply the input/output accuracy by the value of line segment gain Line segment gain (slope) is the maximum value calculated from the following expression Line segment gain = Yn Yn- Xn Xn- Response speed: 0 ms, % response (0 to 90%) Effect of power supply voltage fluctuations: ±0% of span or less for the fluctuation within the operating range of each power supply voltage specification Effect of ambient temperature change: ±0% of span or less for a temperature change of 0 C
Power Supply and Isolation Power supply rated voltage: -40 V DC or 00-40 V AC/DC 0/0 Hz Power supply input voltage: -40 V DC (±0%) or 00-40 V AC/DC (, +0%) 0/0 Hz Power consumption: 4 V DC 7 W, 0 V DC W 00 V AC VA, 00 V AC 49 VA Insulation resistance: 00 MΩ at 00 V DC between input, output, power supply, and grounding terminals mutually Withstand voltage: 000 V AC for minute between input, output, power supply and grounding terminals mutually Environmental Conditions Operating temperature range: 0 to 0 C Operating humidity range: to 90% RH (no condensation) Operating conditions: Avoid installation in such environments as corrosive gas like sulfide hydrogen, dust, sea breeze and direct sunlight Installation altitude: 000 m or less above sea level Mounting and Dimensions Construction: Plug-in type Material: Main unit : ABS resin (black), UL94 V-0 ABS resin + polycarbonate resin (black), UL94 V-0 PBT resin, including glass fiber (black), UL94 V-0 Socket: Modified polyphenylene oxide resin, including glass fiber (black), UL94 V- Mounting: Wall or DIN rail mounting Connection: M screw terminals External dimensions: 8 (H) (W) (D) mm Weight: (including a socket) Main unit: approx 00 g Socket: approx 0 g Accessories Spacer: One (for DIN rail mounting) Range label: One Receiving resistor: One (for current input) Front Panel Input/output can be adjusted using the selection switch and adjustment switch Connector for communication Selection switch Adjustment switch Position of selection switch 0 Operation indicating lamp: Turns on at power on Item to be adjusted No function zero adjustment span adjustment Input zero adjustment Input span adjustment Terminal Assignments 4 7 8 OUTPUT OUTPUT INPUT INPUT NC GND SUPPLY SUPPLY (+) ( ) (+) ( ) (GND) (L+) (N ) All Rights Reserved Copyright 00, Yokogawa Electric Corporation GS 77J04H0-0E st Edition Jul9, 00-00
4 Block Diagrams Operation indicating lamp Handy Terminal or PC Input Selection switch Adjustment switch + R 4 R: External receiving resistor for current input Low drift input processing Microprocessor Computation I/O adjustment Insulation Power supply + L+ 7 Supply N 8 GND External Dimensions Unit: mm () Receiving resistor * (for current input ) Main unit (8) Main unit fixing stopper (upper, lower) - 4 mounting holes (depth: ) Socket 40 4 8 80 (4) 8 8 DIN rail 8-M 7 screws 7 8 0 *: 0 or 00 is attached for current input 0 0 () 78 max <Mounting Dimensions> or more or more - 4 or -M4 40 0 Note: When mounting the units close together, leave a space of at least mm between them Use the supplied spacer to keep a space of mm for DIN rail mounting All Rights Reserved Copyright 00, Yokogawa Electric Corporation GS 77J04H0-0E st Edition Jul9, 00-00
Work Sheet Model and Suffix Codes Number of breakpoints Write at least points for input and output breakpoints data Input (%) (%) Input (%) (%) X0 Y0 X Y X Y X7 Y7 X Y X8 Y8 X Y X9 Y9 X4 Y4 X0 Y0 X Y X Y X Y X Y X7 Y7 X Y X8 Y8 X4 Y4 X9 Y9 X Y X0 Y0 X Y X Y X7 Y7 X Y X8 Y8 X Y X9 Y9 X4 Y4 X0 Y0 X Y X Y (Specification conditions) Input conditions: 0% X0 X X Xn Xn 00% conditions: 0% (Y0 to Yn) 00% The information covered in this document is subject to change without notice for reasons of improvements in quality and/or performance All Rights Reserved Copyright 00, Yokogawa Electric Corporation GS 77J04H0-0E st Edition Jul9, 00-00