Caen ELS OCEM NGPS series User manual

NGPS –User’s Manual
1
NGPS
High-Stability and High-Precision
New Generation
Power Supply Series
User’s Manual
All Rights Reserved
© CAEN ELS s.r.l. & Energy Technology s.r.l.
Rev. 1.6 –October 2019
MAGNET POWER SUPPLY SYSTEMS

NGPS –User’s Manual
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CAEN ELS s.r.l.
via Vetraia, 11
55049 Viareggio (LU) –Italy
Mail: [email protected]
Web: www.caenels.com
OC Energy Technology s.r.l.
via della Solidarieta’, 2/1
40056 Valsamoggia (BO) –Italy
Mail: [email protected]
Web: www.ocem.eu

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User Manual –Models –Options –Custom Models
This manual covers the following standard NGPS Power Supplies models:
•NGPS 100-100E
•NGPS 120-50E
•NGPS 140-50E
•NGPS 150-60E
•NGPS 200-50E
•NGPS 400-30E
•NGPS 200-40E
•NGPS 200-30E
•NGPS 200-60E
•NGPS 300-25E
•NGPS 300-30E
•NGPS 150-70E
•NGPS-CAX 100-100E
•NGPS-CAX 200-40E
•NGPS-CAX 200-50E
•NGPS-CVF 30-300E
And it is also applicable to the basic functions of the following custom NGPS Power
Supplies models:
•NGPS 600-15EH **
•NGPS 1100-5EH **
•NGPS 400-30EH **
•NGPS 160-60EH **
•NGPS 200-25EH **
•NGPS 160-30EH **
•NGPS-CQD 1100-5EH **
•NGPS-CQD 600-10EH **
•NGPS-CQD 600-15EH **
•NGPS-CQD 600-5EH **
•NGPS-CMD 150-70E **
•NGPS-CMD 200-50E **
•NGPS-CMD 300-30E **
**: These models are not fully compatible with “Remote Control Manual” from
CAEN ELS S.r.l., are not compatible with other Firmwares other than the factory one,
and support for these models must be required at: sup[email protected]
In general, this manual also covers the basic functions of Custom Model named as
following:
NGPS Cxx-xxx-yyyZK
Where:
•Cxx is an optional code only present in custom bespoke models
•xxx is a number between 30 and 1100
•yy is a number between 5 e 300
•Z can be “E” or “A” or “U”
•K can be “H” or blank

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Table Of Contents
1. INTRODUCTION..............................................................................................12
1.1 NGPS OVERVIEW .........................................................................................12
1.2 NGPS AT A GLANCE......................................................................................15
1.3 MODES OF OPERATION..................................................................................17
Regulation Mode......................................................................................17
Control Mode...........................................................................................17
Update Mode............................................................................................18
1.4 INTERLOCK AND STATUS SIGNALS ................................................................19
Interlock Enable/Disable Mask................................................................21
Interlock Activation Level Mask ..............................................................21
Interlock Intervention Time......................................................................21
Interlock Identification Name ..................................................................22
Output Status............................................................................................22
1.5 REMOTE SENSING .........................................................................................23
1.6 TRIGGER AND ANALOG CONTROL INPUTS.....................................................26
Trigger input............................................................................................26
Analog Control input ...............................................................................27
1.7 FRONT PANEL INDICATORS...........................................................................28
1.8 INTERNAL PROTECTIONS...............................................................................28
Earth Leakage Current ............................................................................29
Earth Fuse................................................................................................29
Regulation Fault ......................................................................................29
OVerPower - OVP ...................................................................................30
OVerTemperature - OVT .........................................................................30
DC-Link Undervoltage.............................................................................31
1.9 WAVEFORM ..................................................................................................31
1.10 STATUS REGISTER.........................................................................................32
1.11 CUSTOM MODELS .........................................................................................33
NGPS-AUX yyy-zzzK ...........................................................................33
2. INSTALLATION...............................................................................................34
2.1 PREPARATION FOR USE..................................................................................34
2.2 INITIAL INSPECTION ......................................................................................34
2.3 MOUNTING....................................................................................................34
2.4 AC INPUT POWER CONNECTION ...................................................................36
AC Source requirement............................................................................39
2.5 LOAD CONNECTION.......................................................................................39
Wire selection...........................................................................................39
2.6 GROUNDING OUTPUTS ..................................................................................41
2.7 PARALLEL OPERATION..................................................................................42
3. LOCAL CONTROL..........................................................................................46
3.1 NAVIGATION SWITCH....................................................................................46
3.2 DISPLAY........................................................................................................47
Power-up..................................................................................................47
Home Screen............................................................................................48
Menu Page ...............................................................................................50
Control Page.....................................................................................51

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Config Page......................................................................................52
Advanced Page.................................................................................53
4. SOFTWARE COMMANDS.............................................................................55
4.1 ETHERNET INTERFACE ..................................................................................55
4.2 COMMAND SYNTAX......................................................................................55
4.3 COMMAND REPLIES ......................................................................................56
4.4 ERROR TABLE...............................................................................................58
4.5 COMMAND TABLE.........................................................................................59
4.6 BASIC COMMANDS........................................................................................62
MON Command .......................................................................................62
MOFF Command.....................................................................................63
VER Command.........................................................................................64
MST Command.........................................................................................65
MRESET Command .................................................................................66
MRI Command.........................................................................................67
MRV Command........................................................................................68
LOOP Command......................................................................................69
MWI Command........................................................................................70
MWV Command...................................................................................71
MWIR Command..................................................................................72
MSRI Command...................................................................................74
MWVR Command.................................................................................75
MSRV Command..................................................................................77
MRT Command....................................................................................78
MRW Command...................................................................................79
MGC Command ...................................................................................80
MRID Command..................................................................................81
4.7 CONFIGURATION COMMANDS.......................................................................82
MRG Command .......................................................................................84
MWG Command.......................................................................................86
PASSWORD Command............................................................................87
MSAVE Command ...................................................................................89
UPMODE Command ...............................................................................89
SETFLOAT Command.............................................................................90
5. NGPS UTILITIES .............................................................................................91
5.1 DEVICE MANAGER........................................................................................91
Searching for connected devices..............................................................92
Device Configuration...............................................................................93
5.2 VISUAL PS....................................................................................................94
Power Supply IP ......................................................................................94
Main windows..........................................................................................95
Unit Configuration...................................................................................96
Firmware Update.....................................................................................97
6. MECHANICAL DIMENSIONS.......................................................................99
7. TECHNICAL SPECIFICATIONS ................................................................100

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Document Revisions
Document Revision
Date
Comment
0.1
February 7th 2016
Draft Release
0.2
February 22nd 2016
Pre Release Version
0.3
March 15th 2016
Visual PS information added and
corrected
0.4
May 27th 2016
Added Safety Information and
Installation Chapter 2. Removed
parts from Introduction and
Chapter 1
1.0
September 1st 2016
Official Release
1.01
February 1st 2017
Layout change
1.02
September 20th 2017
Chapter 2 reorganization
1.1
November 15th 2017
Added Auto shut down feature on
Display
1.2
November 18th 2018
Added 100-100 model
1.3
February 25th 2019
Added 250-30, 150-60 and 300-30
models. Added parallel operation
1.4
May 2nd 2019
Parameters table updated,
typographical errors fixed, added
NGPS-CAX yyy-zzzK custom
models info
1.5
June 18th 2019
Waveform execution minimum
period updated information
1.6
October 23rd 2019
Added new standard and custom
models and related information

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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
Indoor 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. and Energy Technology 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. and Energy Technology s.r.l. decline 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. and Energy Technology s.r.l. reserve 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.

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•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
•Installation shall be made by Qualified Personnel
according to the Electrical Codes and Standards
•Operation of the NGPS units shall be carried out by
professional skilled personnel
WARNING

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1.Introduction
This chapter describes the general characteristics and main features of the NGPS –
New Generation Power Supply series.
1.1 NGPS Overview
High performances, high efficiency, high stability, easiness of configuration and
maintenance are the key features of the NGPS power supply series, generated by the
joint effort of CAEN ELS and OCEM –Power Electronics.
The NGPS is an independent current- or voltage-controlled digital monopolar
power supply module. There are available different models with different current and
voltage ranges. Standard models are air-cooled units enclosed in 19-inch 3U crates.
Custom models are enclosed in 19-inch crates with different unit height size
depending upon space requirements of internal electronics.
Among custom models several options are available such as:
•Auxiliary 230 Vac power supply separated from main power supply:
NGPS-CAX models
•Coordination with Quench Detector and Heater optional crates for
superconductive magnet applications: NGPS-CQD models
•Voltage generator: NGPS-CVF models
•Custom data communication protocol: NGPS-CMD models
Moreover, water cooled model names ends with letter “H”.
Table 1a reports standard air-cooled units in 3U size, while Table 1b reports the list of
custom models available.
Although this manual refers to standard models, it can also be applied to custom models
for what regards the basic functionalities.
Dedicated manual addendum for custom models are available.

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Table 1a: Standard NGPS models
Model Name
Current (A)
Voltage (V)
Max. Power (kW)
NGPS 100-100E
100
100
10
NGPS 120-50E
120
50
6
NGPS 140-50E
140
50
7
NGPS 150-70E
150
70
10.5
NGPS 200-50E
200
50
10
NGPS 200-40E
200
40
8
NGPS 200-30E
200
30
6
NGPS 200-60E
200
60
12
NGPS 300-25E
300
25
7.5
NGPS 300-30E
300
30
9
NGPS 400-30E
400
30
12
NGPS-CAX 100-100E
100
100
10
NGPS-CAX 200-40E
200
40
8
NGPS-CAX 200-50E
200
50
10
NGPS-CVF 30-300E
30
300
9
Model Name
Current (A)
Voltage (V)
Max. Power (kW)
NGPS 160-30EH
160
30
4.8
NGPS 160-60EH
160
60
9.6
NGPS 200-25EH
200
25
5
NGPS 400-30EH
400
30
12
NGPS 600-15EH
600
15
9
NGPS-CQD 600-5EH
600
5
3
NGPS-CQD 600-10EH
600
10
6
NGPS-CQD 600-15EH
600
15
9
NGPS-CQD 1100-5EH
1100
5
5.5
NGPS-CMD 150-70E
150
70
10.5
NGPS-CMD 200-50E
200
50
10
NGPS-CMD 300-30E
300
30
9

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Table 1b: Customized NGPS models
The NGPS units are available in three different values of nominal three-phase
input voltage:
Version
Three-Phase Input
“A”
208 V (AC)
“E”
400 V (AC)
“U”
480 V (AC)
Table 2: NGPS versions
The NGPS module is composed of a single 19-inch 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
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 to communicate
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.

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1.2 NGPS at a glance
The standard NGPS system is composed by a single 19-inch 3U crate. The NGPS
unit and its I/O connections can be easily seen in Figure 1 (front view) and Figure 2
(rear view).
Figure 1: NGPS front view
On the front side of the NGPS unit are placed: a circuit breaker, 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.
Figure 2: NGPS rear view
On the rear side of the unit are placed: three-phase input connector, earth
connection terminal, output terminals, the D-Sub 15 Female Pin I/O connector and a
connector for the voltage remote sensing.

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Custom models may mount additional I/O connectors; these cases are covered in
section 1.11.

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1.3 Modes of Operation
The NGPS 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 Mode
The NGPS 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 1V.
Control Mode
The NGPS 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;

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Update Mode
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.

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1.4 Interlock and status Signals
The NGPS module has four configurable dry-contact input interlocks and two
output status signals that are directly available on the D-Sub 15 Pin Female connector
on the rear panel (Figure 3).
A mating connector, a standard D-Sub 15 Pin Male type, can be installed in
order to use/access these available signals.
Figure 3: I/O Connector
The pin index of the D-Sub 15 rear connector is summarized in the following
table:
Pin Number
Signal name
#1
Interlock #1 return
#2
Interlock #2 return
#3
Interlock #3 return
#4
Interlock #4 return
#5
DO NOT CONNECT
#6
DO NOT CONNECT
#7
Solid State Relay- Terminal #2
#8
Solid State Relay- Terminal #1
#9
Interlock #1 input
#10
Interlock #2 input
#11
Interlock #3 input
#12
Interlock #4 input
#13
Magnetic Relay Common Contact (C-TAP)
#14
Magnetic Relay Normally Closed Contact (NC-TAP)
#15
Magnetic Relay Normally Open Contact (NO-TAP)
Table 3: D-sub 15 Pin pin-out
Pin #1
Pin #8
Pin #9
Pin #15

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Magnetic Relay Contact (C-TAP, NO-TAP & NC-TAP) and
Solid State Relay Terminals (Terminal #1 & #2) shall not float
more than ±60VDC above/below chassis ground.
Interlocks input and return pins shall not float more than
±60VDC above/below chassis ground.
Voltage between relay C-TAP and NC-TAP or NO-TAP pins
shall never exceed ± 48 V.
Maximum current rating for the Magnetic Relay is 1 A;
current trough pins #13 and #14 or pins #13 and #15 shall
never exceed 1 A.
Maximum current rating for the Solid State Relay is 400 mA;
current trough pins #7 and #8 shall never exceed 0.4 A.
Do not apply voltage between any input interlock and its
corresponding return.
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.
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.
The Solid-state relay close the terminals when the module is ON.
The status of pins #7 and #8 in Table 3 is decided by cell #74 stored value:
Cell #74 = -1 : The status of the Solid State relay is related to the power supply output
status (Short Circuited when Module is ON and Open when module is OFF)
Cell #74 = 0/1: The status of the Solid State Relay is not related to the power supply
output status and its value can be set using the remote command. In particular:
•when cell #74 is 0: pins #7 and #8 are open circuited at the power supply start up;
•when cell #74 is 1: pins #7 and #8 are close circuited at the power supply start up;
WARNING
CAUTION