Related Manuals for Chromalox MiniMax Digital Series
Summary of Contents for Chromalox MiniMax Digital Series
- Page 1 PK565 MiniMax Digital User’s Manual www.chromalox.com 800-443-2640 © 2021 Chromalox, Inc. P/N 0037-75589...
- Page 3 ® price and performance. For more than 80 years, customers have relied on Chromalox for the utmost in quality and innovative solu- tions for industrial heating applications. Chromalox manufactures the world’s largest and broadest line of electric heat and control products.
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Page 4: Table Of Contents
4.2.5 ....Calibration ....................17 5..........Specifications ....................18 6..........Maintenance ....................19 7..........Troubleshooting .................... 20 8..........Parts and Accessories .................. 21 9..........Warranty and Return Information ..............22 - 2 - © 2021 Chromalox , Inc. 1-888-996-9258 ®... -
Page 5: Important Safeguards
Failure to adhere to any of the above may result in equipment damage, operating losses, injury, or death. Chromalox will not be liable for failure to adhere to all governing regula- tions, codes, standards, site procedures and information given in this manual. -
Page 6: Description
Description MiniMax 1, 2, and 3 The Chromalox MiniMax 1, 2, and 3 controllers are highly versatile SCR Power Paks with optional plug-in proportional firing and shorted SCR detection boards. Firing modes include On/Off and DOT proportional zero voltage switching. Chromalox exclusive DOT (Demand Oriented Transfer) firing technique switches the fewest number of cycles to provide the most precise zero crossover control. -
Page 7: Before You Install
YOU must file a claim with the carrier company, since the carrier company will not accept a claim from the shipper (Chromalox). Be sure to check the model number and verify that you have received the correct Model of controller. -
Page 8: Installation
4 ....MiniMax 2 – 75 Amp Mounting Base 5 ....MiniMax 3 – 30, 50 & 75 Amp Mounting Base IMPORTANT: Please note that the figures on the following pages are not drawn to the same scale. - 6 - © 2021 Chromalox , Inc. 1-888-996-9258 ®... - Page 9 MINIMAX 3 – 30, 50 & 75 AMP MOUNTING BASE 10.00 (254.00MM) 8.25 (209.55MM) ø.28 (ø7.14MM) (4 PLACES) 5.75 (146.05MM) 3.25 (82.55MM) 0.75 (19.05MM) 0.00 13.00 (330.20MM) (0.00MM) 14.00 (335.60MM) Figure 5 1-888-996-9258 © 2021 Chromalox , Inc. - 7 - ®...
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Page 10: Wiring
Analog Minimax is designated as MMAXI, II, or III followed by the number 1, 2, 3, or 4 under the firing mode. Single Phase Resistive MINIMAX1 L2 Connection is NOT on MiniMax - 8 - © 2021 Chromalox , Inc. 1-888-996-9258 ®... - Page 11 IMPORTANT: The I t fuses installed on the SCR are designed to protect the SCR from faults on the load connection side. They are NOT intended to provide wire protection. 1-888-996-9258 © 2021 Chromalox , Inc. - 9 - ®...
- Page 12 IMPORTANT: The I t fuses installed on the SCR are designed to protect the SCR from faults on the load connection side. They are NOT intended to provide wire protection. - 10 - © 2021 Chromalox , Inc. 1-888-996-9258 ®...
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Page 13: Instrument Power
Customer Input Outputs Customer Customer Inputs* Not a Customer Connection Modbus Connection Please refer to the figures on page 12 for illustrations of the 6-, 8-, and 10-pin input terminals. 1-888-996-9258 © 2021 Chromalox , Inc. - 11 - ®... - Page 14 The LED demand indicator is located on the main PC board and is viewable through the cover. With the On/Off control option, the indicator will display steady “on” and steady “off”. With the DOT Firing option, the indicator will display the rapid firing sequence. - 12 - © 2021 Chromalox , Inc. 1-888-996-9258 ®...
- Page 15 The Shorted SCR Alarm: When a short is detected the externally connected device output is activated. LD3-SCR1 LD4-SCR2 LD5-SCR3 LD2-Demand SW3 - Phase/Triggering Selection SW1 - Input Selection 1-888-996-9258 © 2021 Chromalox , Inc. - 13 - ®...
- Page 16 Choosing a setting that does not match your unit’s number of phases and legs will result in the unit entering alarm mode and turning the output off after an initial attempt to turn outputs on. - 14 - © 2021 Chromalox , Inc. 1-888-996-9258 ®...
- Page 17 • If sensed phase sequence does not match the setting of selector SW3. (Normally, SW3 should be left in its factory-set state. See caution in section titled, “Phase Selection and Firing Mode“). 1-888-996-9258 © 2021 Chromalox , Inc. - 15 -...
- Page 18 MiniMax 1P The Chromalox MiniMax 1P is a solid-state proportional power controller that utilizes a Phase Angle firing technique to modulate power to an inductive or resistive load. Separate adjustable Zero, Gain, Manual Bias, and Current Limit potentiometers are provided along with screw type plug-in connectors for input signals, Emergency Shutdown, and optional Remote Manual Bias with 0 - 100% dial.
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Page 19: Calibration
Thus, it effectively cancels positive inputs to the MiniMax Power Pak. EXAMPLE: 0 - 5 mA input à set to 0 mA input 4 - 20 mA input à set to 4 mA input 1-888-996-9258 © 2021 Chromalox , Inc. - 17 - ®... -
Page 20: Specifications
± 10% 50/60 Hz Current Limit ....10 - 100% of rated Load Current Rating ... 30, 50, 75 output current Soft Start ......25% demand per second typical reset speed 8.3 milliseconds - 18 - © 2021 Chromalox , Inc. 1-888-996-9258 ®... -
Page 21: Maintenance
The filters used with these devices should be changed on a periodic basis to insure adequate enclo- sure cooling is maintained. Dust – Periodically check for dust or other particulate buildup on heatsinks and bus bars. 1-888-996-9258 © 2021 Chromalox , Inc. - 19 - ®... -
Page 22: Troubleshooting
212˚F (100˚C) still functions Diagnostics with Safety Cover Removed Observation Possible Root Cause Heartbeat LED not blinking Loss of electronics AC power. Check fuse. - 20 - © 2021 Chromalox , Inc. 1-888-996-9258 ®... -
Page 23: Parts And Accessories
Analog Minimax, contact factory for appropriate parts list. Analog Minimax is designated as MMAXI, II, or III followed by the number 1, 2, 3, or 4 under the firing mode. Instrument Power Fuse Chromalox Part Number Description 0024-01097 Littlefuse # 225 002 2 AG 2AMP... -
Page 24: Warranty And Return Information
1976. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Chromalox Warranty Chromalox Instruments and Controls are warranted against defects in workmanship and materials. No other express warranty, written or oral, applies with the exception of a written statement from an officer of Chro- malox , Inc. - Page 25 Typical Model Number 1) SCR Fusing is for semiconductor protection only, not wire protection. 2) Supplied loose for customer mounting. 575V Fusing only Chromalox Part Numbers 3) Supplied loose for customer mounting 0005-60055 — Line filter, single phase, 230VAC 0005-60057 — Line filter, 120-230VAC Note: CE application requires filter.
- Page 26 2) Supplied loose for customer mounting. 575V fusing only 3) Supplied loose for customer mounting. Note: Storage temperature 14ºF to 158ºF (-10ºC to 70ºC). SCR units calibrated for 4-20mA input. - 24 - © 2021 Chromalox , Inc. 1-888-996-9258 ®...
- Page 27 Mmax2 - Typical Model Number 1) SCR fusing is for semiconductor protection only, not wire protection. Chromalox Part Numbers 2) Supplied loose for customer mounting. 575V fusing only 0005-60056 — Line filter, three phase, 440VAC 3) Supplied loose for customer mounting.
- Page 28 CE application requires filter. Note: Storage Temperature 14ºF to 158ºF (-10ºC to 70ºC). CE Application requires filters. Limited Warranty: Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx. Chromalox, Inc. 1347 Heil Quaker Boulevard Lavergne, TN 37086 (615) 793-3900 www.chromalox.com...
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