MXR Series

Hot Switchable Reversible Polarity, Settles to <3ppm within 2s
Voltage and Current Monitor Outputs
Arc and Short Circuit Protected
Well Regulated, Low Ripple, High Stability
UL Recognized, CE Marked and RoHS Compliant
OEM Customization Available

*Note: All specifications are subject to change without notice. Please consult the English PDF version of this datasheet for the most up-to-date revision.

Data Sheet

Mass Spectrometry Brochure

Hot-Switchable Polarity Reversing Power Supply

Spellman’s MXR Series are well-regulated high performance DC-DC converters. The MXR’s low ripple specification makes it ideal for Mass Spectrometry and electron microscopes. The MXR20 is rated at 20kV @ 300uA and MXR30 is rated at 30kV @ 300uA. Both are packaged in a shielded metal enclosure and are available either in analog or RS232 digital control options. These units feature a logic signal input to control output polarity reversal. Voltage, polarity and current monitors are provided. The digital version also features an opto isolated interlock input (HV Enable/Inhibit). Easily customized to meet OEM requirements, the MXR Series can be provided with current control, improved ripple performance and higher voltage and current capabilities.

Typical applications:

Mass Spectrometry
Electron Microscopes
Capillary Electrophoresis
Electrostatic Printing

Specifications

^{(Ref. 128116-001 REV. J)}

OPTIONS

MXR can be ordered as an analog or a digital controlled unit. See How To Order information below.

Custom captive cable options available upon request.

SPECIFICATIONS

Input Voltage:

24Vdc (±5%)

Input Current:

≤1.25 A nominal continuous

≤4.5 A peak during reversing

Output Voltage:

0V to ±20kV (MXR20)

0V to ±30kV (MXR30)

Output Current:

<300μA

Voltage Regulation:

Load: <50ppm of maximum output voltage for a no load to full load change

Line: <20ppm of maximum output voltage for a 5% input line change

Programming and Monitor Accuracy:

±2% Voltage Programming/Monitor

Ripple:

20kV: 100mVp-p
30kV: 150mVp-p

Stability:

1hr = 10ppm max. after 1 hr warm-up

8hrs = 20ppm max. after 1 hr warm-up

Temperature Coefficient:

10ppm/°C

Reversing Time:

2s for +20kV to -20kV or +30kV to -30kV

settling to <3ppm, faster versions are available

Environmental:

Temperature Range:

Operating: 10˚C to 50˚C

Storage: -35˚C to 85˚C

Humidity:

0% to 85%, non-condensing

Cooling:

Convection cooled

Dimensions:

2.05˝ H X 8.47˝ W X 9.45˝ D (52mm X 215mm X 240mm)

Weight:

8.80 pounds (4.0kg)

Input Connectors:

Analog units: Power and Control: 12 way Samtec FWS 12-04-T-S-RA

Digital Units:

Power: 2 way Molex Mini-fit Jr 39-30-1022
Control: 10 way ‘IDC Ribbon cable’ connector 3M N3793-5302RB

Output Connectors:

Standard output is GES HB30 receptacle (GES p/n: 7331051). Mating plug is GES HS30 (p/n: 7331050, not included). Mating cable assembly can be ordered separately, see How To Order information below.

Regulatory Approvals:

UL recognized component (RC). File number E354595. Compliant to IEC/UL 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory use; CAN/CSA-C22.2 No.61010-1. CE marked to EN 61010-1. UKCA marked to BS EN 61010-1. RoHS compliant. As the unit is designed for incorporation within the user's system it is not tested against any specific EMC standards. Compliance with any relevant EMC standards on a system level are the responsibility of the equipment designer.

ANALOG UNITS—POWER AND CONTROL 12 PIN SAMTEC FWS CONNECTOR

PIN	SIGNAL
1	Current monitor output 0-10V = 0V to 500μA Zout=10kΩ, Accuracy ±5%
2	+24Vdc Input
3	Voltage monitor output 0-10V = 0V to Max V Zout=10kΩ, Accuracy ±2%
4	N/C
5	N/C
6	N/C
7	Voltage program input 0-10V = 0V to Max V Zin>1MΩ, Accuracy ±2%
8	Polarity set input, TTL levels: LO = +VE, HI/Open = -VE
9	Signal ground
10	Ground return for +24Vdc
11	N/C
12	Polarity status output LO (<200mV, source 1.5kΩ) = +VE, HI (+24V, source 2.2kΩ) = -VE

DIGITAL UNITS—POWER 2 PIN MOLEX MINI-FIT JR

PIN	SIGNAL
1	+24Vdc Input
2	Ground return for +24Vdc

DIGITAL UNITS—CONTROL 10 PIN IDC RIBBON CONNECTOR

PIN	SIGNAL
1	Transmit data (output) with respect to pin 2
2	Serial signal ground return (if required)
3	Receive data (input) with respect to pin 2
4	N/C
5	N/C
6	N/C
7	Interlock opto-isolator input (0mA = Voltage Inhibit) see*
8	Interlock opto-isolator signal return
9	Polarity set opto-isolator input (0mA = -VE) see*
10	Polarity set signal opto-isolator signal return

How to Order:
Standard	Part No.: MXR20PN24 Part No.: MXR30PN24
Digital (option):	PART No.: MXR20PN24/DCC2 PART No.: MXR30PN24/DCC2
Mating cable, length 2m:	Part No.: HVC30/1S/1279