KEPCO MST 488 Programmer - Manual (Page 15)

MST488-27 SVC 013004
1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains the specifications and instructions for the installation and operation of the
Model MST 488-27 Power Module Controller (Figure 1-1), manufactured by Kepco, Inc., Flush-
ing, N.Y. U.S.A.. Parts lists and schematic diagrams are included in Section 4.
1.2 GENERAL DESCRIPTION
The Kepco model MST 488-27 is a Power Module Controller which has the capability to pro-
gram, control and monitor the outputs of up to 27 Kepco MAT, MBT, MST or BOP power sup-
plies (power modules). The MST 488-27 communicates with its Host computer over the IEEE
488 bus (GPIB) using either CIIL (Control Interface Intermediate Language) or SCPI (Standard
Commands for Programmable Instruments) Languages. An auxiliary input port allows for com-
munication via the RS 232-C (EIA 232) standard serial communications bus. The MST 488-27
communicates with the MAT, MBT, MST or BOP series using the IEEE1118 two-wire serial bus,
hereafter referred to as the Control Bus, which allows control over distances up to a maximum
of 1000 feet (300 meters) (see Figure 1-2).
The IEEE 488 GPIB interface functions implemented by the controller are defined by the IEEE
488 Standard, and described in Table 3-1.
The MST 488-27 Controller interfaces to an MST power module via either the RA 55 or CA 400
Rack Adapter; interconnection to the Host Computer on the GPIB is made via an IEEE 488
standard cable. If the serial port is used for communications between the controller and a com-
puter terminal, a 9 pin null-modem RS 232-C connector/cable is required.
The MST 488-27 Controller is comprised of a single-board computer (SBC) and power supply
housed in a 1/9 Rack (7” high by 1-3/4” wide by 20-1/4” deep) case (see Figure 1-3).
1.3 SPECIFICATIONS (REFER TO FIGURE 1-3 AND TABLE 1-1)
The Host Computer can set the output voltage with current limit, or the output current with volt-
age limit. The Host Computer can then have the MST 488-27 read back the actual output volt-
age and current delivered by each of the MST power modules to their respective loads. The
MST 488-27 is continually polling all of the power modules on the Control Bus for flags of cata-
strophic and noncatastrophic errors. All data transmissions over the GPIB are ASCII encoded.
The values for the command parameters can be written in integer, decimal or scientific notation.
The responses from the MST 488-27 are detailed in Section 3 of this manual.
TABLE 1-1. GENERAL SPECIFICATIONS FOR MST 488-27 CONTROLLER
FEATURE SPECIFICATION
A-C Input Requirements
95 to 264V a-c, 47 to 63 Hz, approximately 12
Watts maximum
Ambient Operating Temperature Range 0 to +55 ° C
Storage Temperature Range –20 to +75° C
Dimensions 7” H x 1-3/4” W x 20-1/4” D
Color (front panel) Kepco gray, Hartin Paint No. 15-22493
Mounting Rack Adapter (Kepco RA 55 or CA 400)
FIGURE 0-1.