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User Manual
– Rev M
California Instruments
Displays:
LCD display:
Status indicators:
A two-line LCD display with backlight provides easy to read guidance through all setup operations. An adjustable viewing angle makes it easy to read from all practical locations.
Bright status indicators inform the user of important power source conditions. The Remote lamp informs the user that the unit is under remote control. The Overload lamp indicates that excessive current is being drawn at the output. The Over temperature lamp illuminates when internal heat sink temperatures are too high. The Hi Range indicator is lit any time the unit is switched to the high voltage range. The Output
On/Off indicator is on when the power source output relays are closed.
2.6 Special Features and Options
Controller Features
Mode:
Parallel Operation:
Clock and Lock Mode:
(Option -LKM and -LKS required).
Controller:
Output Relay:
Output On/Off:
This option is not available for the MX15.
Up to three units can be paralleled in a single-phase configuration (with one master controller and one or two auxiliary units). (MX30/2 and
MX45/3). Only the master unit requires a controller in this setup. The auxiliary units are controlled through the system interface.
Up to three units (all with controllers) can be connected in a one, two, or three-phase configuration using CLOCK and LOCK connections. Each unit requires its own controller in this configuration. One unit acts as the master and provides the reference clock to the auxiliary units.
Programmable controller front panel assembly.
Standard output relay feature to isolate power source from the load.
The output relay can be used to quickly disconnect the load. An amber status indicator displays the status of the output relay.
Firmware Options
- 704
- 160
-411
-413
787
-ABD
Mil Std 704D & E test firmware.
Mil Std 704A, B, C, & F test software (refer to Avionics Software Manual
P/N 4994-971 for details).
Note: Requires use of MXGui Windows application software provided on
CD ROM CIC496.
RTCA/DO-160D test firmware
RTCA/DO-160E test software (refer to Avionics Software Manual P/N
4994-971 for details)..
Note: Requires use of MXGui Windows application software provided on
CD ROM CIC496.
IEC 61000-4-11 Voltage Dips and Interruptions Test firmware. Supported over remote control interface only.
IEC 61000-4-13 Interharmonics Test Firmware. Supported over remote control interface only.
Boeing 787 Test software (refer to Avionics Software Manual P/N 4994-
971 for details)..
Note: Requires use of MXGui Windows application software provided on
CD ROM CIC496.
Airbus ABD0100.1.8 Test software (refer to Avionics Software Manual
P/N 4994-971 for details).
Note: Requires use of MXGui Windows application software provided on
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User Manual
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California Instruments
-WHM
CD ROM CIC496.
Watt Hour Measurements (Accuracy and Resolution. See Sec. 2.6.5.)
Output Voltage Range Options
- HV
- XV
Adds 400 V AC only output range.
Adds customer specified AC only output range. Contact factory for details.
Misc. Options
-ES
-MB
Emergency Shut off switch. This option key lock push button is installed on the front panel of the master MX if ordered with the MX system. When pushed in, the main AC contactor is opened disconnecting the AC input power to the MX input transformer. Note that the controller (and LCD display) will still be powered up but no power is available to the amplifiers and there will be no output power either. The controller runs off the LV supply, which must be turned off with the front panel breaker.
After the ES has been pushed, the provided key will be required to release it. Once the ES button has been released, the MX
must
be powered down using the front panel circuit breaker and turned back on to start up again.
Note: Do not misplace the 2 keys provided, as no duplicates are available from CI. If lost, the ES switch must be replaced. In that case, contact AMETEK Programmable Power customer service.
).
Multi-box Option. Provides additional controllers in Auxiliary units of multi-cabinet configurations (MX30/2, MX45/3) to allow individual MX15 units to be used stand-alone.
-LF
-HF
Limits maximum output frequency to 500 Hz.
Increases maximum output frequency to 900 Hz.
External Accessories (External to MX chassis)
7003-416-1
7003-424-1
Input / Output wiring junction box.
Connects two to six three-phase
MX45 cabinet outputs, neutral and ground to a common output terminal block housed in a metal enclosure junction box. Can also be used to connect multiple MX chassis to common AC input
service. See section 3.13 for details.
Output noise filter, 3 phase + neutral. May be used to reduce output noise of MX15 when testing EUT’s for conducted emissions. This is an external filter that attenuates the 250 KHz ripple frequency on the MX output by > 20 dB. The filter is rated for 125A per phase and 800 Hz.
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User Manual
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California Instruments
2.6.1 -HV Option Specifications
The -HV option provides an AC only output range of 0 to 400 Vac L-N. Specifications unique to the -HV option are shown in the table below.
Output Parameter MX15 MX30/2
MX45/3
Modes
Pi Controller AC
Voltage:
Ranges (L-N):
Resolution:
Accuracy:
0 -400 V
0.1 V
± 0.4 V
Output Coupling AC coupled
Power (total power for all phases, either range, at full scale voltage)
AC Mode
Current
15 KVA 30 KVA 45 KVA
Note: Current, maximum amps per phase available between 50 and 100 % of voltage range.
MX15-1
37.5 A
MX15-1
75 A
MX15-1
112.5 A
Peak Current
AC Mode MX15-1
112.5 A
MX15-1
225 A
MX15-1
337.5 A
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California Instruments
Note: Output specifications apply below the Current / Voltage rating lines shown in the
V/I rating chart below.
Current
(RMS)
37.5
37.5 A
-HV Range
20 100 200 300 400
Voltage (RMS)
Figure 2-5: MX15-1 Voltage / Current Rating Chart, -HV Option
– Max. Rating.
Figure 2-6: Voltage / Current Rating Chart, -HV Option
– Derated.
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California Instruments
2.6.2 -XV Option Specifications
Consult factory for -XV option specifications.
2.6.3 -HF Option Specifications
The -HF option extends the maximum available output frequency from 819 Hz to 900 Hz. Some restrictions are in effect at this increased output frequency level.
All other specifications of the MX15 system remain unchanged if this option is installed except as noted in the table below.
-HF Option:
Frequency
Range:
Resolution:
-HF option:
0.01 Hz
0.1 Hz
1 Hz
± 0.01 %
16 Hz - 900 Hz
< from 16.00 to 81.92 Hz
> from 82.0 to 819.2 Hz
> from 820 to 900 Hz
Accuracy:
Phase
Accuracy: 16 - 100 Hz:
100 - 500 Hz:
500
– 819 Hz:
819
– 900 Hz:
< 1.5°
< 2°
< 4°
< 5°
Voltage
High Voltage Range
Low Voltage Range
-HV Voltage Range
Maximum voltage at 900 Hz is 290 Vrms
Maximum frequency at 300 Vrms is 875 Hz
Maximum voltage at 900 Hz is 145 Vrms
Maximum frequency at 150 Vrms is 875 Hz
Maximum voltage at 900 Hz is 386 Vrms
Maximum frequency at 400 Vrms is 875 Hz .
Note: If the voltage or frequency settings shown here are exceeded for any length of time (> 1 sec), the MX may shut down generating an over temperature fault to protect itself.
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California Instruments
Figure 2-7: -HF Option Voltage Frequency Rating 300V range
MX15
Figure 2-8: -HF Option Voltage Frequency Rating 150V range
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California Instruments
2.6.4 -LF Option Specifications
The -LF option limits the maximum available output frequency to 500 Hz. All other specifications of the MX15 system remain unchanged if this option is installed.
2.6.5 WHM Option Specifications
Watt-hour measurement mode:
Accuracy:
0-6.000KW
Resolution:
>6.000KW
0.01 KWH
0.01KWH + 0.1% <100 Hz
0.02KWH +0.1% 100-819 Hz
Times three of the above specification
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California Instruments
2.6.6 SNK Option Specifications
The
–SNK or current sink option enables the MX power source to sink current from the unit under test. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. The ability of the MX to simulate the grid provides unique opportunities to test the EUT for compatibility to commonly occurring line anomalies like voltage and/or frequency fluctuations. Examples of these types of EUT are inverters (PV Solar, Wind) hybrid drive systems, regenerative breaks.
The SNK option requires special amplifiers that have a different control loop from the standard
MX amplifiers. In the AC mode the upper frequency limit of an MX configured with the
–SNK option is 500Hz as opposed to the standard 819Hz. Also, the voltage distortion levels are slightly higher than on MX units without this option.
-SNK Option: The following specifications apply to the AC mode unless specified otherwise
Frequency
Range:
Resolution:
-HF option:
0.01 Hz
0.1 Hz
± 0.01 %
16 Hz - 500 Hz
< from 16.00 to 81.92 Hz
> from 82.0 to 500.0 Hz
Accuracy:
Phase
Accuracy: 16 - 100 Hz:
100 - 500 Hz:
< 1.5°
< 2°
Voltage
Distortion THD
1
:
(Resistive full load)
Power
Measurements
Power
< 1 % @ 16 - 66 Hz
< 2 % @ 66 - 500 Hz
Capability (AC & DC) Full power can be returned into MX as long as current does not exceed maximum current limit setting for selected range. See REGENERATE
CONTROL screen for protection settings in REGEN mode.
Without
–SNK option
MX units without the SNK will generate a warning message (Error 31) if more than 20% of available power (per phase) is regenerated by the load.
It will shut off (Error 32) if the negative power reaches 30% of available power.
Programmable Output Impedance (available on MX15-1Pi, MX30-30Pi and MX45-3Pi only)
Auto-disabled Programmable impedance is turned off as soon as a regenerative load is detected. Once turned off, it will remain off until programmed by user again. This is required as programmable impedance is based on delivering current which is not the case when driving a regenerative load.
Regenerated power is displayed with a negative sign to indicate direction of power flow.
All other specifications of the MX system remain unchanged if this option is installed.
1
The distortion specification for the MX Series is valid for pure (inductance < 12 uH) resistive load conditions and using a 30 KHz LP filter on distortion meter.
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