MST-MHT SERIES 071320
3-1
SECTION 3 - OPERATION
3.1
INTRODUCTION TO CONTROLLING THE MST-MHT POWER MODULE OUTPUT
The MST-MHT family of Power Modules is designed for remote operation only. Operating the
power supply requires a series of commands to be sent to the Power Module from a host com-
puter, via a selected IEEE 1118 bus compatible Controller (see PAR. 1.4.1). The commands
may either be pre-programmed or sent individually using a keyboard, depending upon the con-
troller selected.
The MST-MHT Power Module responds to SCPI (Standard Commands for Programmable
Instruments) commands. SCPI provides a common language conforming to IEEE 488.2 for
instruments. For an explanation of SCPI commands and program syntax, refer to the applicable
controller Instruction Manual (see PAR. 1.1 for download instructions).
3.1.1
STATUS FLAGS (ERROR MESSAGES)
The MST-MHT Power Module supplies information to the controller regarding its operating con-
dition when queried via the
SYST:ERR
? command. A listing of the standard error messages
appear sin the Instruction Manual for the MST 488-27HT Controller (see PAR.1.1). Table 3-1
lists the “catastrophic” status messages, along with the related MST-MHT Power Module condi-
tion.
3.1.2
TIMING REQUIREMENTS FOR A VALID STATUS
After sending a command that might affect the output of the Power Modules or their relays, it is
recommended that the Status command be sent. For detailed information on this command
refer to the applicable controller Instruction Manual. For the Controller/MST-MHT system status
command to be valid, the required time delay before sending the command is as follows:
•
After an OUTP ON or OFF, wait approximately 300 milliseconds.
•
After a Confidence Test command or an Internal Self Test, wait approximately 400 milli-
seconds.
•
After a Reset command, wait approximately 300 milliseconds.
TABLE 3-1. ERROR MESSAGES
STATUS MESSAGE
POWER MODULE CONDITION
POWER LOSS
OVERVOLTAGE / OVERCURRENT (See PAR. 3.7.2)
SOURCE POWER LOSS (See PAR. 3.7.5)
None
Not Supported
OVERTEMPERATURE
OVERTEMPERATURE (See PAR. 3.7.4)
OVERLOAD
OPERATION IN MODE OTHER THAN PRO-
GRAMMED MODE (See PAR’s. 3.2.1, 3.2.2)
VOLTAGE ERROR
OUTPUT NOT AT PROGRAMMED VALUE
CURRENT ERROR
OUTPUT NOT AT PROGRAMMED VALUE
RELAY ERROR
DEFECT IN ISOLATION RELAY OPERATION
RELAY ERROR
OPEN SENSE LEAD OR OPEN POWER LEAD
CONDITION (See PAR. 3.7.6)
Содержание MST 100-2MHT
Страница 2: ......
Страница 8: ...iv MST SERIES 071320 FIGURE 1 1 MST POWER SUPPLY...
Страница 13: ...MST MHT SERIES 071320 1 5 FIGURE 1 1 MST MHT POWER SUPPLY MECHANICAL OUTLINE DRAWING...
Страница 16: ......
Страница 30: ......
Страница 39: ...MST MHT SERIES 071320 3 9 FIGURE 3 1 CALIBRATION TEST SET UP O2 S2 CS GND S1 O1...
