KEPCO ABC-DM SERIES - Manual (Page 27)

ABC 040104
2-3
2.3 SOURCE POWER REQUIREMENTS
This power supply operates from single phase a-c mains power over the specified voltage and
frequency ranges (Table 1-3) without any need for range selection.
2.4 COOLING
The power devices used within the power supply are maintained within their operating tempera-
ture range by means of internal heat sink assemblies cooled by convection. Periodic cleaning of
the power supply interior is recommended. If the power supply is located within a confined space,
care must be taken that the ambient temperature, which is the temperature of the air immediately
surrounding the power supply, does not rise above the specified limits (see Table 1-3).
2.5 PRELIMINARY OPERATIONAL CHECK
A simple operational check after unpacking and before equipment installation is advisable to
ascertain whether the power supply has suffered damage resulting from shipping.
Refer to Figures 2-1 and 2-3 for location of operating controls and electrical connections. Tables
3-1 and 3-2 explain the functions of operating controls/indicators and keypad keys, respectively.
1. With POWER switch set to off position, connect the power supply to source power.
2. With no load connected, set POWER switch to the ON position. Each time the unit is turned
on an internal self-test is performed. If the test is successful the indications of step 3 are vis-
ible.
3. The alphanumeric display (LCD) indicates the model and GPIB address. After approximately
2 seconds, the display changes to the power on default values: Local mode, Constant Volt-
age (CV) mode, 0.000V, 0.000A, output enabled, command entry status (see Figure 2-3).
Overcurrent and Overvoltage protection are set to the maximum values (Table 1-2), but are
not displayed.
TABLE 2-3. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS
CONNECTOR PIN SIGNAL NAME FUNCTION
Adapter Cable (P/N KIT 219-0436)
PIN FUNCTION
RS 232
PORT
(connector A1J5)
1 RTN Return 1 Signal Ground
2 Not Used Not Used 2 Receive Data
3 TXD Transmit Data 3 Transmit Data
4
RXD Receive Data
4
Data Terminal Ready (protocol not
used)
5 RTN Return 5 Signal Ground
6
Not Used Not Used
6
Data Set Ready (protocol not
used)
7
RTN Return
7
Request To Send (protocol not
used)
8 RTN Return 8 Clear To Send (protocol not used)
9 Signal Ground