User Manual for SIMPSON models including: AC TRMS Current, Mini Max M235 Series Digital Panel Meter, Mini Max M235 Series, M235 Series, Digital Panel Meter, Panel Meter, Digital Meter, Meter
Simpson Electric - Manuals
MiniMax M235 & M245 Digital Panel Meters - Simpson Electric
AC TRMS Current Mini-Max M235 Series Digital Panel Meter Minimum Depth Indicator - Less Than 2.5" (60mm) of Space Required Behind the Panel Stackable Mounting Bracket Included for Easy Installation LCD: 3-1/2 Digit, 0.5" (12.7mm) High Display with Optional Negative Image, Bright Red Backlighting LCD LED: 3-1/2 Digit, 0.56" (14.2mm) High Display Limited Range Display Scaling Standard Screw Terminals for Easy Installation Six Current Ranges: 200µA, 2mA, 20mA, 200mA, 2A, 5A LCD: 85-250VAC or optional 9-32VDC Power Supply LED LED: 85-250VAC Power Supply Simpson's Mini-Max Voltage Indicators provide high quality accuracy and reliability in a compact, 60mm deep case. LCD (Liquid Crystal Display) Units offer a 3-1/2 digit, 0.5" (12.7mm) LCD display with an optional bright red, negative image, backlight. LED (Light Emitting Diode) Units offer a 3 1/2 digit, 0.56" (14.2mm) display. A unique mounting bracket is provided to allow for vertical or horizontal stacking of multiple indicators. All Mini-Max units feature a 3/64 DIN, high-impact plastic case. The LCD units have a clear viewing window, and the LED units have a red window. All units feature user-selectable decimal point, auto zero and limited scaling capabilities. Installation and Panel Cutout 2.68" (68mm) 0.88" (22.2mm) 2.68" (68mm) 2.84" (72mm) 0.16" (4.0mm) 0.95" (24mm) 2.36" (60mm) Mounting Requirements 0.874" (22.2mm) 0.13" (3.18mm) Max Panel Thickness Insert the Mini-Max through the panel, and then slide the mounting bracket onto the Mini-Max. The mounting bracket allows Mini-Max units to be stacked side-to-side or top-to-bottom and to maintain the DIN standard panel arrangements in 24mm by 72mm multiples. Panel cutout instructions for stacking multiple units are provided under "stacking features." DISPLAY Type: 7-segment LCD or LED Height: LCD 0.5" (12.7mm) LED 0.56" (14.2mm) Decimal point: 3-position selectable Overrange indication: LCD Most significant digit ="1" LED Blinking display LCD Backlighting: Optional negative image, red backlight Polarity: Auto with "-" indication, "+" implied POWER REQUIREMENTS AC Volt: 85-250VAC @40-440Hz DC Volt: 9-32VDC (LCD version only) Power Consumption: (Non Fused) 85-250VAC: LCD 4.0VA (2.4W) Max LED 3.6VA (2.16W) Max 9-32VDC: LCD 3W Max Isolation: 250 Vrms Max NOISE REJECTION CMRR: 86dB typical ACCURACY @ 25°C LCD ±(0.5% of reading + 5 count) (50 Hz - 2KHz) LED ±(0.5% of reading + 2 count) (50 Hz - 5KHz) ENVIRONMENTAL Operating Temperature: 0 to 55°C Storage Temperature: -10 to 60°C Relative Humidity: 0 to 85% non condensing @ 40°C Temperature Coefficient: (0.2% of reading ± 0.5 digits)/°C Warmup time: Less than 20 minutes ANALOG TO DIGITAL CONVERSION Technique: Integrating Dual Slope Rate: 3 samples/second-typical MECHANICAL Bezel: 0.95" x 2.84" (24mm x 72mm) Depth: 2.36" (60mm) Panel cutout: 0.88" x 2.68" (22.2mm x 68mm) Weight: LCD 3.5oz (99.2g) LED 2.6oz (74g) Case Material: 94-0,UL-rated, glass-filled thermoplastic ACA TRMS LCD LCD LED LED Range Resolution Voltage Max Input Voltage Max Input M235 Drop Unfused Drop Unfused 200uA 100nA 200mVdc 10mA 200mVdc 6mA 2mA 1uA 200mVdc 40mA 200mVdc 20mA 20mA 10uA 200mVdc 100mA 200mVdc 60mA 200mA 100uA 200mVdc 400mA 200mVdc 300mA 2A 1mA 200mVdc 3A 200mVdc 2.6A 5A 10mA 50mVdc 6A 100mVdc 6A DP3 DP2 DP1 Connections LCD VERSIONS POWER NOT USED LED VERSIONS POWER AC IN AC IN DP3 DP2 DP1 HOLD DP POS NEG COMMON INPUT SIGNAL EXCITATION OUT -DC +DC AC LINE AC IN AC IN INPUT SIGNAL DP2 DP1 HOLD DP3 DP POS NEG COMMON EXCITATION OUT -DC +DC AC LINE Input Signal: Input Power: Decimal Point: Hold Option: WARNING: These instruments are designed for maximum safety to the operator when mounted in a panel according to instructions. They are not to be used unmounted or for exploratory measurements in unknown circuits. Connect the AC signal to be monitored to the AC IN input terminals. For AC power, connect the AC POWER LINE to the AC LINE inputs. For optional DC power, connect the DC Supply to the DC inputs. Observe polarity. To select a decimal point, connect the appropriate DP input pin (DP1 - DP3) to the DP COMMON output. Unused DP inputs may remain unconnected (open). Connect the DP COMMON output to the HOLD input. If this feature is not required, the HOLD pin may remain unconnected. LCD Backlight Option: Negative image, bright red backlighting is available for the LCD versions only. This illumination allows the unit to be read in low light areas. Backlighting power is supplied by the Mini-Max, so no additional external power is required. Excitation Option: Excitation is available at the EXCITATION OUT Positive (POS) and Negative (NEG) terminals for powering external transmitters or transducers. This source is isolated from the measurement input as well as the input power circuits. The voltages available are 12Vdc or 24Vdc with a maximum load current of 25mA. This feature eliminates the need to mount an external DC power source for transducers or sensors used in your application. Display Scaling FRONT OF METER TOP HALF OF CASE LOCKING TAB LCD VERSIONS Scale Adjustment: The "Coarse" adjustment R12 will allow a limited range of adjustment values. The "Fine" adjustment R9 allows for an adjustment range of approximately 1% of the "Coarse" adjustment. Apply the full scale input to the meter. Adjust R12 to be within 1% of the desired result. Then use R9 to Using a screwdriver or thumbnail, spread the tabs on each side of the case to unlock the top half. Lift the rear of the top half and slide it away from the front of the meter. Scale Adjustment: Mini-Max indicators have limited range scaling. There are no optional connections required for these to function. The meter can be scaled down to 1/2 the value of the input, or scaled up to 2 times the value of the input, or a maximum reading of 1.999, whichever is lower. Example: A 2 Amp input has a maximum reading of 1.999 counts, so you cannot double the 2 Amps, but you can make a 1 Amp input read 1.999. Note: Any physical damage to the meter during calibration will void the warranty. Note: Any physical damage to the meter during adjustment will void the warranty. LED VERSIONS Scale Adustment: The "Coarse" adjustment RV1 will allow a limited range of adjustment values. The "Fine" adjustment RV2 allows for an adjustment range of approximately 1% of the "Coarse" adjustment. Apply the full scale input to the meter. Adjust RV1 to be within 1% of the desired result. Then use RV2 to Stacking Features The mounting clips, included with every Mini-Max, can be connected together. Multiple units can be mounted in a single opening, allowing perfect alignment. To punch one hole for multiple units, be sure to adjust the standard panel erly in the hole. remaining units. Vertical Standard cutout 0.88" (22.2mm) 2.68" (68mm) Vertical 0.071" (1.8mm) Add to standard when stacking Horizontal Standard cutout 0.88" (22.2 mm) 2.68" (68mm) SCALE ADJ. SCALE ADJ. FINE COARSE Note: Any physical damage to the meter during adjustment will void the warranty. Horizontal 0.16" (4.0 mm) Application Example A company needs to monitor the power supply voltage (120VAC), load current (50 amps) and frequency (60Hz) of an AC motor. Voltage: A Mini-Max 200 Volt AC meter is installed in parallel with the power supply. Current: A Mini-Max 5 Amp AC meter is attached to a 50:5 amp Donut Current Transformer. The meter must be scaled to display 50.0 when 5 amps are applied. R9 and R12 (RV1 and RV2, LED version) are adjusted until the correct value is displayed. The meter is connected to the Donut, and the AC line is fed through the donut. Frequency: A Mini-Max 200Hz Frequency Meter is installed in parallel with the power supply. The wiring for the volt meter can be split to the frequency meter as long as the voltage will not exceed 250 volts AC. [Note: Frequency Meter is available in model M235 LCD only.] 5 A AC UNIT IN HI IN LO AC MOTOR POWER SUPPLY Ordering Information Your Mini-Max Current Indicator can be configured by making an entry for each box. Basic Unit Display DPM Power Supply Range Excitation Output** M235 3-1/2 Digit Indicator 0 85-250VAC 2 9-32VDC* 0 Non Backlight (LCD) 1 Negative Image Red (LCD) 2 Red LED 41 200 A 42 2mA 43 20mA 44 200mA 45 2A 46 5A 0 None 1 12VDC 2 24VDC *Not available for LED **25mAdc Max Note: The Display Hold feature is standard and user selectable. Note: Special scaling is available from the factory at the time of ordering 200 VAC UNIT IN HI IN LO 200Hz Frequency Unit Safety Symbols The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. The CAUTION sign denotes a hazard. It calls attention to an operating procedure, practice, or the like, which, if not correctly adhered to, could result in damage to or destruction of part or all of the instrument. Accessories Donut Current Transformers enable the Mini-Max to monitor AC current up to 1000 amps. The Donut (also known as a "Toroid") is placed around one of the legs of the device being monitored and emits up to a 5 amp signal. The MiniMax can be scaled to accurately display the current being monitored. Each Donut comes with 2' long secondary leads. Ordering Information Range/Amps Primary 50 75 100 150 200 250 300 400 500 600 750 1000 Secondary 5 5 5 5 5 5 5 5 5 5 5 5 Catalog Number 01293 01306 01297 01298 01299 01313 01300 01305 01301 02303 02459 02304 SIMPSON ELECTRIC COMPANY 520 Simpson Avenue, Lac du Flambeau, WI 54538 · (715) 588-3311 · FAX (715) 588-3326 www.simpsonelectric.com Printed in U.S.A. Part No. 06-116068, Edition 18, 10/22Acrobat Distiller 8.1.0 (Windows)