INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-72-
3.8.3.4 OPN
and
CLS
The CLS (Close) OP-code closes the relay between the amplifier outputs and the output connector. The CLS Op-code
must be followed by a valid channel designator. (:CH00, :CH01, :CH02 or :CH03), but all channels close
simultaneously for any valid designator. A programmed amplitude will not be generated at the output of the power
source until the relays have been closed.
CLS :CH00 <CR> <LF> Closes relay
If an output voltage been programmed prior to the CLS OP-code, the output will appear after CLS has been sent. If the
power source has the MT option, do not program a voltage greater than 30 volts without closing the output relays or the
confidence loads in the power source may be damaged.
The OPN (open) OP-code opens the relay at the power source output. Prior to opening the relay, the output of the
power source is reduced to zero.
OPN :CH00 <CR> <LF> Opens relay
3.8.3.5 RST
The RST (reset) OP-code resets the power source to its default values as follows:
Output
Amplitude 5.0
Volts
Frequency
Selected
default
frequency
Phase
A
Phase
Angle
0
Degrees*
Phase
B
Phase
Angle
240
Degrees
Phase C Phase Angle
120 Degrees
Sync
Internal
Current
Limits
Maximum
current
of
power
system
Power
Source
Relays
Open
[*Relative
to
External
Sync.]
In addition, all non-catastrophic error messages (SYNTAX and RANGE errors) are cleared. All other error messages
are not affected.
OP-code RST must be followed by ACS and any one of the valid channel designators :CH00 through :CH03 (e.g., RST
ACS :CH00 <CR> <LF>).
3.8.3.6
CNF and IST
The CNF (confidence) OP-code instructs the power source to perform a confidence test of the entire power system.
The OP-code stands by itself. The confidence test flow diagram is shown in Figure 3-7. If confidence testing detects a
fault, an appropriate message is transmitted to the Bus Controller on receipt of an STA OP-code (see paragraph
3.8.3.9). The output relays of the power source are opened during confidence testing.
During confidence testing, the power source generates the following:
Amplitude
A,
B,
C 115
Volts
Frequency
400
Hz
Current
Limit
Maximum
and
5%
of
Maximum
B
Phase
Angle
240
degrees
C
Phase
Angle
120
degrees
The power source compiles a message after the confidence test and the receipt of a STA OP-code. The power source
responds with the appropriate message as shown in Figure 3-7. The reference designators shown in Figure 3-6 are for
Summary of Contents for 12000L-1P
Page 119: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 115 Figure 6 1 MODULE LOCATION...
Page 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
Page 148: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 144 FIGURE 2...
