Caen ELS FAST-PS-1K5 100-15 User manual

FAST-PS-1K5 –User’s Manual
1
FAST-PS-1K5
1.5-kW Current- and Voltage-
Controlled Digital Bipolar
Power Supply Series
User’s Manual
All Rights Reserved
© CAEN ELS S.r.l.
Rev. 1.2 –September 2017
MAGNET POWER SUPPLY SYSTEMS

FAST-PS-1K5 –User’s Manual
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FAST-PS-1K5 –User’s Manual
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User Manual –Models –Options –Custom Models
This manual covers the following standard Power Supplies models:
FAST-PS-1K5 100-15
FAST-PS-1K5 50-30
FAST-PS-1K5 30-50
FAST-PS-1K5 15-100
This manual covers the Custom Model named as following:
FAST-PS-1K5-Cxx yyy-zzz
Where:
xx is the Customization code
yyy is the maximum output current expressed in Amps
zzz is the maximum output voltage expressed in Volts
For technical assistance please refer to the following contact:
CAEN ELS S.R.L.
SS14, km 163,5
34149 Basovizza (TS) –Italy
(c/o Area Science Park –Building Q1)
Phone: [phone]
Fax: [phone]

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Table Of Contents
1. INTRODUCTION..............................................................................................10
1.1 FAST-PS-1K5 OVERVIEW ...........................................................................10
1.2 FAST-PS-1K5 AT A GLANCE ........................................................................11
1.3 MODES OF OPERATION..................................................................................13
Regulation Mode......................................................................................131.3.1
Control Mode...........................................................................................131.3.2
Update Mode............................................................................................141.3.3
1.4 EXTERNAL INTERLOCKS AND STATUS...........................................................14
Interlock Enable/Disable Mask................................................................151.4.1
Interlock Activation Level Mask ..............................................................151.4.2
Interlock Intervention Time......................................................................161.4.3
Interlock Identification Name ..................................................................161.4.4
Output Status Signal –user-defined application .....................................171.4.5
1.5 REMOTE SENSING .........................................................................................17
1.6 TRIGGER,ANALOG CONTROL AND AUX INPUTS ..........................................19
Trigger input............................................................................................191.6.1
Analog Control Input...............................................................................201.6.2
Configurable AUX Input..........................................................................211.6.1
1.7 OUTPUT CONNECTORS...................................................................................22
Models up to 59 V....................................................................................221.7.1
Models from 60 V to 100 V......................................................................221.7.2
1.8 FRONT PANEL INDICATORS...........................................................................23
1.9 INTERNAL PROTECTIONS...............................................................................23
Earth Leakage Current ............................................................................241.9.1
Earth Fuse................................................................................................241.9.2
Regulation Fault ......................................................................................241.9.3
Input OVerCurrent - OVC .......................................................................251.9.4
OVerPower - OVP ...................................................................................251.9.5
Crow-Bar .................................................................................................261.9.6
Crowbar Unwanted Triggering, Please Read...................................261.9.6.1
Quench Protection ...................................................................................261.9.7
OVerTemperature - OVT .........................................................................271.9.8
DC-Link Undervoltage.............................................................................271.9.9
1.10 WAVEFORM ..................................................................................................28
2. INSTALLATION...............................................................................................29
2.1 PREPARATION FOR USE..................................................................................29
2.2 INITIAL INSPECTION ......................................................................................29
2.3 MOUNTING....................................................................................................29
Rack Mounting.........................................................................................302.3.1
Desktop use..............................................................................................302.3.2
2.4 AC INPUT POWER CONNECTION ...................................................................31
AC Source requirement............................................................................312.4.1
AC Input Cord..........................................................................................312.4.2
2.5 LOAD CONNECTION.......................................................................................32
Wire selection...........................................................................................322.5.1
2.6 REMOTE SENSING .........................................................................................35

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2.7 GROUNDING OUTPUTS ..................................................................................37
2.8 INTERLOCK AND STATUS SIGNALS ................................................................37
3. LOCAL CONTROL..........................................................................................40
3.1 NAVIGATION SWITCH....................................................................................40
3.2 DISPLAY........................................................................................................41
Power-up..................................................................................................413.2.1
Home Screen............................................................................................423.2.2
Menu Page ...............................................................................................443.2.3
Control Page.....................................................................................453.2.3.1
Config Page......................................................................................463.2.3.2
Advanced Page.................................................................................473.2.3.3
4. MECHANICAL DIMENSIONS.......................................................................48
5. TECHNICAL SPECIFICATIONS ..................................................................49

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Document Revisions
Revision
Date
Comment
0.1
March 10th 2016
Preliminary Release
1.0.0
June 19th, 2016
Revision of all parts for first issue
1.0.1
August 8th, 2016
Updated product disposal LOGO and pictures for
models from 60 V to 100 V.
1.0.2
October 25th, 2016
Updated company name
1.1
October 25th, 2016
Added information on the analog input control
1.2
September 13th, 2017
Changed information on the solid-state relay
behavior (user-defined applications)

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Safety information
The following table shows the general environmental requirements for a correct
operation of instruments referred in this User’s Manual:
Environmental Conditions
Requirements
Environment
Indore use
Operating Temperature
0°C to 40°C
Operating Humidity
20% to 80% RH (non-condensing)
Altitude
Up to 2000 m
Pollution degree
2
Overvoltage Category
II
Storage Temperature
-10°C to 60°C
Storage Humidity
5% to 90% RH (non-condensing)
The following symbols are used within this manual or are reported in the box
and along this manual:
CAUTION Risk of Electrical Shock
Caution: Documentation must be consulted in all cases where
this symbol is marked
Indicates ground terminal
Protective Ground Conductor Terminal
0 Off (Power)
I On (Power)

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The WARNING sign denotes a hazard. An attention
to a procedure is called. Not following the procedure correctly could result
in personal injury. A WARNING sign should not be skipped and all
indicated conditions must be fully understood and met.
The CAUTION sign denotes a hazard. An attention to
a procedure is called. Not following procedure correctly could result in
damage to the equipment. Do not proceed beyond a CAUTION sign until all
indicated conditions are fully understood and met.
CAEN ELS S.r.l. will repair or replace any product within the guarantee
period if the Guarantor declares that the product is defective due to workmanship or
materials and has not been caused by mishandling, negligence on behalf of the User,
accident or any abnormal conditions or operations.
Please read carefully the manual before operating any part of the instrument
Do NOT open the BOX TOP
COVER
CAEN ELS S.r.l. declines all responsibility for damages or injuries caused
by an improper use of the Modules due to negligence on behalf of the User. It is
strongly recommended to read thoroughly this User's Manual before any kind of
operation.
CAEN ELS S.r.l. reserves the right to change partially or entirely the contents of this
Manual at any time and without giving any notice.
WARNING
CAUTION
WARNING

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Disposal of the Product
The product must never be dumped in the Municipal Waste. Please check your local
regulations for disposal of electronics products.
Do not use this product in any manner not specified by
the manufacturer. The protective features of this product
may be impaired if it is used in a manner not specified
in this manual.
Do not use the device if it is damaged. Before you use
the device, inspect the instrument for possible cracks or
breaks before each use.
Do not operate the device around explosives gas, vapor
or dust.
Always use the device with the cables provided.
Turn off the device before establishing any connection.
Do not operate the device with the cover removed or
loosened.
Do not install substitute parts or perform any
unauthorized modification to the product.
Return the product to the manufacturer for service and
repair to ensure that safety features are maintained
WARNING

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1.Introduction
This chapter describes the general characteristics and main features of the FAST-
PS-1K5 bipolar power supply series.
1.1 FAST-PS-1K5 Overview
High performances, high efficiency, extreme stability, easiness of configuration
and maintenance are the key features of the FAST-PS-1K5 power supply series.
The FAST-PS-1K5 is an independent current- or voltage-controlled digital
bipolar power supply module. Different models with several output current and
voltage ranges are commercially available:
Model Name
Current
Voltage
FAST-PS-1K5 100-15
±100 A
±15 V
FAST-PS-1K5 50-30
±50 A
±30 V
FAST-PS-1K5 30-50
±30 A
±50 V
FAST-PS-1K5 15-100
±15 A
±95 V
Table 1: FAST-PS-1K5 standard models
The FAST-PS-1K5 module is compact and fits in a single 19-inch 2U standard
crate. The power unit implements a completely digital control loop with a Pulse
Width Modulation (PWM) generation technique that allows adapting the system to
any load condition.
The control board houses a dedicated FPGA with integrated dual-core ARM
CPU. The loop regulation task is performed directly by the FPGA logic, in order to
have high performance and deterministic loop control. On the ARM CPU it is
installed an embedded Linux OS, that supervises all process as communication,
diagnostics and local interface handling.
Remote communication is guaranteed by means of an Ethernet 10/100/1000
autosensing socket present on the front panel of the power unit. The power supply can

FAST-PS-1K5 –User’s Manual
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be also monitored and controlled via a navigation switch and a graphic high resolution
color display featuring user-friendly menus.
In addition to the standard Ethernet interface it is possible to communicate
with the unit using the SFP-ports on the front panel. This interface allows
communicating with the unit using a proprietary packet structure with a very high
update rate (more than 10 kHz). These ports are connected directly to the FPGA logic
and so the given packet is elaborated directly by the hardware logic.
This approach eliminates the software stratification that manages the packet
and the computational time is smaller and deterministic, allowing a very high update
rate of the setpoint, giving the user more flexibility and excellent rates for the digital
control of the power supply.
1.2 FAST-PS-1K5 at a glance
The FAST-PS system is composed by a single 19-inch 2U crate. The FAST-PS-
1K5 unit and its I/O connections can be easily seen in Figure 1 (front view),
Figure 2(rear view high current) and
Figure 3(rear view high voltage).
Figure 1: FAST-PS-1K5 front view
On the front side of the FAST-PS-1K5 unit there are placed respectively: a
power switch, a colour graphic display with navigation switch for the local control of
the module, three communication sockets (2 SFPs and one Ethernet ports), four status
LEDs and one USB device connector.

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Figure 2: FAST-PS-1K5 100-15 and 50-30 rear view
Figure 3: FAST-PS-1K5 100-15 and 50-30 rear view
On the rear side of the unit are placed: AC power line input, fuse holders (two
for AC input and one for the earth leakage), the output connections, the D-Sub 15
Female Pin I/O connector. A separate connector for the voltage remote sensing is also
present below the I/O connector.
Two BNC connectors on the left side, reserved for the Trigger Input, the Analog
Control and an Auxiliary Input for Custom developments of the unit are also provided
on the rear panel of the unit.
The BNC connector CB is a Crowbar TTL signal that is needed for paralleling
different units.

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1.3 Modes of Operation
The FAST-PS-1K5 system has multiple features and multiple configurations
that allow using the unit for a very widespread topology of applications.
A brief summary of the basic configurations that the unit is able to handle are
hereafter presented.
Regulation Mode1.3.1
The FAST-PS-1K5 can be used as current-controlled or voltage-controlled
bipolar units. The regulation types are:
C.C. mode: it is the Constant Current regulation mode. The power supply
regulates the output current set by the user;
C.V. mode: it is the Constant Voltage regulation mode. The power supply
regulates the output voltage set by the user.
In C.V. mode it is possible to use the remote sensing terminals that allow
regulating the output voltage directly on the load thus compensating the voltage drops
on the output cables. The maximum voltage drop that the power supply is able to
compensate is of 0.5V.
Control Mode1.3.2
The FAST-PS-1K5 unit can be controlled in three main different ways,
hereafter listed:
LOCAL control: the unit can be controlled directly via the front panel color
display and the navigation switch. When the unit is set in LOCAL mode it is
possible to perform readings and monitor from the remote interface but any
setting command is denied;
REMOTE control: the unit is controlled via the TCP-IP Ethernet interface.
The setting and control of the unit can be performed exclusively via this
interface while monitoring is still possible from the local display;
FAST-INTERFACE control: this interface allows controlling the unit via a
proprietary protocol over the SFP/SFP+ interfaces (optical or electrical) and
it is meant to be used for very fast applications. Update rates of more than
10 kHz are reachable using this communication channel.

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Update Mode1.3.3
The current or voltage setting of the unit can also be performed in four
different modes:
NORMAL: the update of the set-point (current or voltage, depending on the
operation mode) is performed as soon as a new set-point is received via the
remote, local or fast interfaces;
WAVEFORM: the update of the set-point is performed on a specific timing
(defined as a “waveform” attribute, more information on the Waveform
section) and it is done internally;
TRIGGER: the set-point is updated by an external event –i.e. a hardware
trigger coming from the rear BNC connector. Please note that this mode of
operation is obtainable only on the units that have the external trigger input
connector installed (ordering option –factory configurable);
ANALOG INPUT: the unit is controlled by an external signal that is fed to
the rear BNC connector. The unit acts as a C.C. or C.V. generator depending
on the pre-set Regulation Mode. This option is only available in units that
have been factory configured (ordering option).
Please note that the last two Update Modes of operation are available only in
models that have been factory configured at the time of purchase to have the Trigger
Input and/or the Analog Control Input features.
1.4 External Interlocks and Status
The system is provided with four external interlock inputs that can be easily
configured using the VISUAL PS graphic software (provided with the power unit) or
directly using the standard power supply commands. A detailed description of the
configuration of the external interlock using the power supply commands is hereafter
described.
Two output status signals provide the output status of the power module: when
the module is ON, the Normally Closed contact (NC-TAP) switch opens and vice-
versa. Also the NO-TAP changes its state consequently.
External Interlocks and Status are available on a D-Sub 15 Pin Male type on
the rear panel of the FAST-PS-1K5, Figure 4.

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Figure 4: I/O Connector
Interlock Enable/Disable Mask1.4.1
The FAST-PS-1K5 series external interlock can be enabled or disabled by
writing to the corresponding Interlock Enable/Disable Mask field of the advanced
configuration parameters (field #90), using the MWG command. The value to be
written is in ASCII format, representing the corresponding bit mask, as shown in the
following table:
Bit #4
(INT #4)
Bit #3
(INT #3)
Bit #2
(INT #2)
Bit #1
(INT #1)
Enabled (1)
Disabled (0)
Enabled (1)
Disabled (0)
Enabled (1)
Disabled (0)
Enabled (1)
Disabled (0)
Table 2: Enable/Disable Mask Parameter
Example: if only interlock #2 and interlock #3 need to be enabled, it is
necessary to write 0x6 (it is ASCII representation to the bit mask 0110) to the feild
#90. The following command has to be se sent to the power supply (after having un-
locked the password protection): “MWG:90:0x6\r”.
Interlock Activation Level Mask1.4.2
Each external interlock can be chosen to trip at high or low logic level. The
high level means that the interlock trips when the interlock input signal is shorted,
otherwise the low level that the interlock trips when the input is open. To configure
the interlock state mask it is necessary to write on the advanced configuration
parameters (field #91). The value to be written is an ASCII format representing the
corresponding bit mask, as shown in the following table:
Bit #4
(INT #4)
Bit #3
(INT #3)
Bit #2
(INT #2)
Bit #1
(INT #1)
High (1)
Low (0)
High (1)
Low (0)
High (1)
Low (0)
High (1)
Low (0)
Table 3: Activation Level Mask Parameter
Pin #1
Pin #8
Pin #9
Pin #15

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Example:if interlock #1 and interlock #4 need to have a high activation level
(trip when the interlock input signal is shorted), it is necessary to write 0x9 (it is
ASCII representation to the bit mask 1001) to the field #91. The following command
has to be se sent to the power unit: “MWG:91:0x9\r”. This setting has no effect if the
interlock is not enabled.
Interlock Intervention Time1.4.3
The module allows to set also the interlock intervention time (how long an
interlock signal needs to be at its activation level before tripping and thus generating a
fault condition). The Intervention time parameters are stored in the field #92 for
Interlock #1, in field #94 for interlock #2, in field #96 for interlock #3 and in field #98
for interlock #4. The value to be set is in ASCII format, representing the intervention
time in milliseconds. The minimum settable value is 0 (immediate generating of fault
condition) and the maximum value is 10.000 ms (corresponding to 10 seconds).
Example:if interlock #1 needs to have an interlock intervention time of 750
ms, the following command has to be se sent to the power unit: “MWG:92:750\r”.
This setting has no effect if the interlock is disabled.
Interlock Identification Name1.4.4
The FAST-PS-1K5 also allows associating a name to the interlocks in order to
read form the remote interface or to display on the local display the interlock
condition name. The Intervention names are stored in the field #93 for Interlock #1, in
field #95 for interlock #2, field #97 for interlock #3 in field #99 for interlock #4. The
value to be set is in ASCII format, representing the interlock name.
Example:if the interlock #1 is associated to the cabinet door open, the
following command can to be se sent to the power unit: “MWG:93:Cabinet door\r”.
This setting has not effect if the interlock is disabled.
The magnetic relay provides the output status of the power module: when the
module is ON, the Normally Closed contact (NC-TAP) switch opens and vice-versa.
The solid state relay has the same behaviour (closed, when the module is ON). The
absolute maximum current that can be sunk by the relays are shown in the following
table:
Relay
Pins
Max Current
Max Voltage
Magnetic
#13-14-15
1 A
48 V
Solid state
# 7-8
400 mA
48 V
Table 4: Ratings of relays

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The interlock pins are galvanically isolated from ground and outputs terminal,
nevertheless the absolute maximum voltage, referred to ground, that pins can sustain
is 48V. The two interlocks inputs have their own return connection. The interlock is
hardware-activated when the input pin and its corresponding return pin are shorted.
Do not apply voltage between any input interlock and its corresponding return.
The configurability of the FAST-PS-1K5 series allows users to decide what
interlock are enabled or not, set the interlock “trip” level (i.e. low or high), the time of
intervention (the time that an interlock signal has to be at the trip level before
generating a fault condition) and an associated interlock name. This configuration can
be set and read using the VISUAL PS graphic software (provided with the power
module) or using the low-level MRG and MWG commands, which allows setting the
advanced configuration parameters. The interlocks are disabled by default.
Output Status Signal –user-defined application1.4.5
The solid state relay signal (please refer to the I/O connector section for more
information) can be remotely commanded by the user in order to change its state
(open/shorted) for any specific customer application.
Solid State Relay Terminals (Terminal #1 & #2, pins #7-#8) shall not float
more than ±60 VDC above/below chassis ground and its maximum current rating
should never exceed 400 mA.
1.5 Remote Sensing
The FAST-PS-1K5 mounts a voltage-sensing connector on the rear panel that
allows using the voltage sensing feature especially when using the power supply in
C.V. mode. Connector is shown in Figure 5.
Figure 5: Remote Sensing Connector
The FAST-PS-1K5 is provided as factory-default with a mating connector
already shorting the pins 1-2 and 3-4 in order to have direct sensing at the output
terminals.
Pin #1
Pin #4

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Figure 6: Factory mating connector
The two remote sensing terminals are present on the corresponding connector
on the rear panel:
Description
Pin
Name
VSENSE +
#1
+S
VOUT +
#2
+
VOUT –
#3
–
VSENSE –
#4
–S
Table 5: Remote sensing pinout
By using these two “sensing” pins it is possible to sense the output voltage
directly on the load, thus recovering possible voltage drops on the output cables up to
1V.
It is strongly suggested to use twisted cables when using the remote sensing
feature in order to minimize possible noise pick-up.
The FAST-PS-1K5 is shipped with a mating connector for the remote sensing
that short-circuits the +S and + pins and the –S and –pins respectively. This
configuration performs the remote sensing directly at the output connector of the
power unit. Leaving +S and –S pins disconnected will make the power supply sense
the output voltage directly at the output terminal connections. When using the remote
sensing feature leave pins #2 (+) and #3 (–) disconnected.
In order to perform remote sensing at different points –e.g. the load terminals
–it would be necessary to connect Pin #1 and Pin #4 as in Figure 7:
FAST-PS-1K5
LOAD
+S
-S
+
-
Power Cables
Sensing Cables
OUTPUT
CONNECTOR

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Figure 7: Example of Remote Sensing
1.6 Trigger, Analog Control and AUX inputs
The standard version of the FAST-PS-1K5 includes inputs for a trigger signal, for an
analog control and for an additional conversion (ADC) AUX channel on the rear
panel as shown in the following Figure 8.
Figure 8: BNC input connectors
A brief description of these features and their functionalities is presented
hereafter.
Trigger input1.6.1
The trigger input accepts TTL (5V) and LVTTL (3.3V) compatible signals and
should be driven by a low-impedance source or generator.
The logic levels are subject to a hysteresis that allows for this recognized
values that guarantee correct operation of the trigger as listed in Table 6:
Logic Level
Value
Low-to-HIGH
> 2.2 V
High-to-LOW
< 0.7 V
Table 6: Trigger Logic Levels
The absolute maximum rating for the Trigger Input signal is
of 5.5 V (a higher voltage level applied to this input can
seriously damage the device).
CAUTION

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A visual representation of the voltage levels for the trigger operation is
presented in the following Figure 9:
Figure 9: Trigger Thresholds
Analog Control Input1.6.2
An input that allows the FAST-PS-1K5 to be controlled as an “amplifier” is
provided on the rear panel on a BNC connector. This input is labelled as “ANALOG
CONTRL”.
This input accepts signals ranging from -10V to +10V and generates an output
which is proportional to the input signal, meaning a –Full-Scale for a -10V input, 0 for
a 0V input and +Full-Scale for a +10V input. An example of the relation between the
analog input signal and the output (can be either current or voltage, depending on the
Regulation mode) is shown in Error! Reference source not found..
In order to avoid drifts, offset and external noise pick-up it is always suggested
to use the digital interface –e.g. Ethernet –to control the power unit in order to get
the best performance.
0
1
2
3
4
5
6
Trigger Input
HIGH LEVEL
LOW LEVEL
ABSOLUTE MAXIMUM
Trigger Signal