Spellman MPD2.5P10/24 User manual

Installation and User Guide
MPD 2.5kV to 30kV, 10W Range of
High Voltage Power Supply Modules
Document number: 81408-4
Issue
1
2
3
Date
19/01/2021
05/03/2021
Issuing Authority
I-7632
10377P
Checked
Approved
Tel : [phone]
Fax : [phone]
e-mail : [e-mail]
Broomers Park, Broomers Hill Lane
Pulborough, W. Sussex, RH20 2RY

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CHANGE HISTORY
Section
Reason for Change
Issue
All
Created from 81408-1
1
1
2.2
Updated different cable length ordering
Updated approval wording
2
Contents
1. Unit Description ..............................................................................................................4
1.1 Ratings................................................................................................................................5
2. Safety..............................................................................................................................6
2.1 Explanation of Symbols.......................................................................................................7
2.2 Applicable standards...........................................................................................................7
3. Installation of the Units....................................................................................................8
3.1 Electrical Installation............................................................................................................8
3.2 Mechanical Installation........................................................................................................8
4. Operation of the Units...................................................................................................10
4.1 Analogue Control...............................................................................................................10
4.2 Digital Control....................................................................................................................14
Appendix 1. Mechanical Outline 2.5kV to 10kV units...........................................................17
Appendix 2. Mechanical Outline 15kV, 20kV units...............................................................18
Appendix 3. Mechanical Outline 30kV units.........................................................................19
Appendix 4. Graphical User Interface (GUI).........................................................................20
Appendix 5. Loading firmware and program Slave Address ................................................27

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SAFETY
DANGER
HIGH VOLTAGE
RISK OF ELECTROCUTION
Observe extreme caution when working with this equipment
High voltage power supplies must always be connected
to a protective earth
Do not touch connections unless equipment is turned
off and the capacitance of both the load and power
supply are grounded
Allow adequate time for discharge of internal
capacitance of the power supply
Do not ground yourself or work under wet or damp
conditions
Servicing Safety
When maintenance of equipment fitted with this power
supply requires removing the equipment cover with the
power on, this should only be done by qualified
personnel aware of the hazards
This power supply has no user serviceable parts.
Return to supplier for servicing

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1. Unit Description
The MPD range of high voltage 2.5kV to 30kV dc-dc converters produce a high performance
dc output for a wide range of instrumentation and analytical applications. The combination of
linear and switch mode power conversion techniques provides low noise and high
efficiency. The unit also offers excellent ripple levels and stability.
The units are designed for operation from a 24V dc input and will supply up to 10W of output
power. The signal and power inputs and outputs are via a 15 way male ‘D’ connector.
The HV output is via a 1m long un-terminated HRG58 screened cable, other lengths up to
5m can be requested, please consult with factory.
The part number for a given unit describes its characteristics:
MPD 15 N 10 / 24 / XXXX
Model type
Max o/p kV
Polarity
Max o/p
power (w)
Input voltage
Options

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1.1 Ratings
The units provide the following rated HV outputs:
Unit
Voltage
Current
MPD2.5P10/24
+2.5kV
4mA
MPD2.5N10/24
-2.5kV
4mA
MPD5P10/24
+5kV
2mA
MPD5N10/24
-5kV
2mA
MPD10P10/24
+10kV
1mA
MPD10N10/24
-10kV
1mA
MPD15P10/24
+15kV
0.67mA
MPD15N10/24
-15kV
0.67mA
MPD20P10/24
+20kV
0.50mA
MPD20N10/24
-20kV
0.50mA
MPD30P10/24
+30kV
0.33mA
MPD30N10/24
-30kV
0.33mA
The input rating for all units is 24Vdc ±2V, 1A
Unit masses:
2.5kV to 10kV units 420g
15kV and 20kV units 650g
30kV units 950g
Environmental conditions:
The operating temperature range is 0°C to +50°C.
Relative humidity rating (RH)% is 20% to 85% (non-condensing).
Altitude 0 to 2000m above mean sea level

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2. Safety
TheHVoutputsoftheunitsarehazardousandtheconditionsofthismanualmustbecomplied
withtomaintain safety. The unit is contained in an earthed case with a screened HV output
cable and the HV output cable must be terminated safely before the unit is operated. This
unit must be sourced with a UL recognised double insulated or SELV 24 V dc supply.
The unit shall be properly bonded to the main protective earthing termination in the end
product.
The unit has been evaluated for use in a Pollution Degree 2, Installation Category II
environment.
Consideration should be given to conducting the following tests with the unit installed in
the end product:
a. Permissible Limits Tests with the unit installed in the end product.
b. Temperatures on any accessible surfaces.
The case performs the function of heat sink and can exceed 60C, therefore access to the
unit shall be prevented during operation.
The protection against electric shock provided by the unit may be impaired if the unit is
not operated in accordance with the instructions in this manual.

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2.1 Explanation of Symbols
This symbol means Caution, consult the manual.
This symbol indicates the Protective Earth (PE) terminal.
This symbol means Caution, hot surface
2.2 Applicable standards
The unit is designed to meet the requirements of EN 61010-1, UL 61010-1 and CAN/CSA-22.2
No. 61010-1. Please consult the factory for further approval information.
!
This symbol means Caution, risk of electric shock.

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3. Installation of the Units
3.1 Electrical Installation
The units should only be connected to a Category II supply installation.
The power for the unit should be sourced from a UL recognised double insulated or
SELV 24 V dc supply.
The unit shall be properly bonded to the main protective earthing termination in the end
product.
The input and output connectors are not intended for field connections and should only
be connected to internal wiring in the end product.
All external circuits connected to High Voltage outputs shall be Double/Reinforced
insulated from any accessible parts.
The connector details on the standard unit are shown in table 1 overleaf.
3.2 Mechanical Installation
The units are only to be used in a pollution degree 2 (PD 2) environment.
The physical outline of the units is shown in Appendices 1 and 2.
Fixings:
M3 x 0.5 blind inserts, maximum thread depth 5mm.
Note: Failure to comply with the above could compromise the safe operation of the unit
and invalidate the warranty.

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Table 1. Connector pin-out, all units
The control and monitoring signals and supply power are connected via a single 15 way
male ‘D’ connector:
PIN
SIGNAL NAME
PARAMETERS
1
Power Ground
Ground
2
+24Vdc Input
+24Vdc @ 1 amp maximum
3
Voltage Monitor Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10kΩ
4
Voltage reference output
10V
5
Voltage Program Input
0 to 10 Vdc equals 0 to 100% of rated output, Zin
= 10MΩ
6
Voltage Program
Differential Amplifier
Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10kΩ
7
Voltage Program
Differential Amplifier Input
Positive
0 to 10 Vdc differential between pin 7 and pin 9
equals 0 to 100% of rated output, diode clamped
to ground, Zin = 38kΩ
8
Current Monitor Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10kΩ
9
Voltage Program
Differential Amplifier Input -
Negative
0 to 10 Vdc differential between pin 7 and pin 9
equals 0 to 100% of rated output, diode clamped
to ground, Zin = 38kΩ
10
Voltage Program Digital
Output
0 to 10 Vdc equals 0 to 100% of rated output,
Zout = 10kΩ
11
Analog signal ground
Analog signal ground for control and monitoring
12
Enable Input
Low = Enable. TTL, CMOS and open collector
compliant
13
Digital Mode
RS232 or RS485 configuration
Low = RS485
Open circuit = RS232
14
RS232 TxD/ RS485-
Transmit data (output) wrt pin 1 or
RS485 inverting
15
RS232 RxD/ RS485+
Receive data (input) wrt pin 1 or
RS485 non inverting

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4. Operation of the Units
The units are operated by either analogue input, using anyof the methods detailed below, or
by digital control using an RS232/485 serial port with a PC connection and a suitable
interface.
4.1 Analogue Control
4.1.1 Control and Monitoring Signals
The units are controlled and monitored using the following analogue signals.
PARAMETER
MIN.
VALUE
MAX.
UNITS
Voltage control: 0 to 10V = 0 to Full scale output V
(i)
-1
+1
%
Voltage reference output (wrt signal ground)
10
V
Enable: Active low enable, input impedance.
Designed to be operated by TTL or CMOS logic or
open collector transistor.
10
kΩ
Voltage monitor: 0-10V for 0 to full scale output (wrt
signal ground)
-1
+1
%
Current monitor: 0-10V for 0 to full scale output (wrt
signal ground)
-1
+1
%
Note:
(i) a stable, low noise reference source is recommended to achieve full unit performance.
The following sections describe the various connections that can be used to control the
MPD HV units.

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4.1.2 Remote DAC Control
The differential input allows the voltage programming circuit to be remote from the power
supply. It prevents voltage drops in the ground connection from affecting the programming
signal. However, if there are voltage drops in the ground connection, the DAC should be
provided with its own reference.
24V Power input on Pin 2.
Power Common on Pin 1.
0 to 10V voltage control signal to Pin 7.
Signal ground reference for 0 to 10V control signal. Connected to signal ground for 0 to
10V voltage control, also connected to Pin 9 and Pin 11.
Link Pin 5 to Pin 6.
Connect Enable Pin 12 to ground to enable HV output.
Voltage monitor output is on Pin 3.
Current monitor output is on Pin 8.

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4.1.3 Local DAC Control
It is not necessary to use the differential input when the voltage control circuit is close to the
power supply, however it is important to connect all grounds at Pin 1 of the PSU to prevent
voltage drops in the ground circuit from affecting the programming signal. Take care to
avoid ground loops.
24V Power input on Pin 2.
Power Common on Pin 1.
DAC output to Pin 5.
DAC ground to Pin 11.
Connect Pin 4 to the DAC reference input.
Connect Enable Pin 12 to ground to enable HV output.
Voltage monitor output is on Pin 3.
Current monitor output is on Pin 8.

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4.1.4 External potentiometer control
An external potentiometer can be connected between the 10V reference on Pin 4 and
ground with the wiper connected to Pin 5, this will allow the potentiometer to be used to
control the unit. The user should note the use of a potentiometer may affect the
performance of the MPD unit.
The unit may be controlled by an external potentiometer as follows: -
24V Power input on Pin 2.
Power Comon on Pin 1.
Connect Pin 4 to external pot CW.
Connect Pin 11 to external pot CCW.
Connect Pin 5 to external pot wiper.
Connect Enable Pin 12 to ground to enable HV output.
Voltage monitor output is on Pin 3.
Current monitor output is on Pin 8.

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4.2 Digital Control
The units operate with a simple ASCII protocol see document number 48113-21 which
covers systems with both single and multiple slaves. The following parameters apply.
PARAMETER
MIN.
VALUE
MAX.
UNITS
Digital Mode - RS232 or RS485
Low = RS485
Open circuit = RS232
Enable - Active low enable, input impedance.
Designed to be operated by TTL, CMOS logic or
open collector transistor or software command.
10
kΩ
Voltage control resolution
16
Bit
Monitor resolution
16
Bit
The following sections describe the circuits used for RS232 and RS485 to make digital
(serial) connection the MPD HV units; refer to Table 1 for pin out details.
The units are controlled using a Graphical User Interface (GUI), for more information on a
GUI refer to Appendix 4.

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4.2.1 RS232 Connection
The unit has RS232 communication facilities available via pins 14 and 15 of the 15 way ‘D’
connector. For the protocol used, refer to protocol document 48113-21, which can be
provided on request.
The unit may be controlled digitally as follows: -
24V Power input on Pin 2.
Power Common on Pin 1.
Select Mode RS232 on Pin 13 by leaving open circuit
RS232 signal ground on pin 11
RS232 transmit on Pin 14 –connect to Rx pin on PC
RS232 receive on Pin 15 –connect to Tx pin on PC
Connect Enable Pin 12 to ground to enable HV output. This is independent of the
firmware/communications interface and can be used to shut down the HV output.
Connect Pin 5 to Pin 10.

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4.2.2 RS485 Connection
The unit has RS485 communication facilities available via pins 14 and 15 of the 15 way ‘D’
connector. For the protocol used, refer to protocol document 48113-21, which can be
provided on request.
The unit may be controlled digitally as follows: -
24V Power input on Pin 2.
Ground on Pin 1.
Select Mode RS485 –connected Power common to Pin 1.
RS485 signal ground on Pin 11.
RS485 Z (inverting) on Pin 14 –connect to RS485 inverting pin, Z or B on PC
RS485 Y (non-inverting) on Pin 15 –connect to RS485 non-inverting pin, Y or A on PC. A
120R termination resistor should be fitted to the last MPD particularly if long cabling is
used.
Connect Enable Pin 12 to ground to enable HV output. This is independent of the
firmware/communications interface and can be used to shut-down the HV output.
Connect Pin 5 to 10 and link Pin 11 to 13.

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Appendix 1. Mechanical Outline 2.5kV to 10kV units.
130.0
70.0
Fixing face
15w D-plug
Customer Adjust Point
70383
46.014.0
49.0
28.0
MOUNTING HOLE TEMPLATE
(NOTE - Max thread depth into unit is 5mm)
TOP OF UNIT
7.0
Unit Footprint
30.0
SIDE OF UNIT
CALIBRATION
VOID IF SEAL
BROKEN
HOLE Ø3.5mm
IN 3 POSITIONS

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Appendix 2. Mechanical Outline 15kV, 20kV units.
165.0
70.0
Fixing face
15w D-plug
Customer Adjust Point
70927
46.014.0
49.0
28.0
MOUNTING HOLE TEMPLATE
(NOTE - Max thread depth into unit is 5mm)
TOP OF UNIT
7.0
Unit Footprint
30.0
SIDE OF UNIT
CALIBRATION
VOID IF SEAL
BROKEN
HOLE Ø3.5mm
IN 3 POSITIONS

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Appendix 3. Mechanical Outline 30kV units.

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Appendix 4. Graphical User Interface (GUI)
Use of the GUI
During development and testing Spellman HV Ltd. use an in-house developed
Graphical User Interface (GUI) to control and manage the MPD units. This GUI is not
intended for customer use and so is an un-supported product. It is provided to
customers to help them with initial product evaluation. Longer term it is normal for
customers to use their own software to control the product.
The communications protocol for the MPD unit is specified in the Spellman document:
48113-21 Serial Communications Protocol.
GUI Requirements
The GUI is written to run on Microsoft Windows 10 and uses Microsoft .Net Framework
Version 4.
The GUI makes use of the Windows Registry to hold application configuration
information. Your IT team MUST ensure the GUI has permission to access to the
following area of the registry.
GUI Limitations
The GUI does not support internationalisation. All GUI text is in English.
GUI Installation
To install the GUI, the user will need the GUI installer application. This is comprised of
two files. ➢‘Customer 48113-GUIvxryy.exe’
➢‘Customer 48113-GUIxryy.msi’
Where:
x Major Version Number
yy Minor Version Number
If you do not have the files, please contact your local Spellman Sales Office quoting
‘48113-GUI’. They will arrange for the installer files to be sent to you.