KEPCO MAT 1/3 Rack - Manual (Page 32)

MAT 1/3 RACK/112404 3-1
SECTION 3 - OPERATION
3.1 GENERAL
Interconnections linking a stabilized Power Module to an AC power source and a load
are critical. For optimum performance certain rules must be observed. These rules are
described in detail in the following paragraphs.
3.2 SERIES CONNECTION OF MAT POWER MODULES
When connecting MAT Power Modules in series, it is recommended that they be
enabled and disabled in sequentially. That is to say the output enable relays will be
closed or opened one immediately preceding the other. The Power Modules can be
enabled or disabled in any order. The system Status must be checked after a Relay
Enable or Disable Command is sent. The two MAT Power Module addresses in this
example are 17 and 21.
To enable the Modules connected in series, the Host Computer sends:
CLS :CH17(cr)(lf
STA(cr)(lf)
CLS :CH21(cr)(lf)
STA(cr)(lf)
To disable the Modules connected in series, the Host computer sends:
OPN :CH21(cr)(lf)
STA(cr)(lf)
OPN :CH17(cr)(lf)
STA(cr)(lf)
For parallel operation it is recommended that the user seek the manufacturer's assis-
tance for specific applications.
3.3 POWER MODULE CONTROLLER/MAT TIME DELAYS (TO OBTAIN A VALID STA-
TUS):
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 information on this
command see the Power Module Controller Operator's Manuals. The required time
delay before a valid status of the TMA/MAT system is as follows:
After an Open, Close, Change of Polarity, or Change of Mode 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
After an INX Command the maximum delay time is 2 seconds