11
IM 77C01U01-01E
1st Edition : Dec. 26, 2000-00
(Numeric up switch)
This switch is used for increment of setting
parameter and input/output adjustment data.
(Numeric down switch)
This switch is used for decrement of setting
parameter and input/output adjustment data.
Note 1: Instantanous power value is displayed with symbol
in case only negative.
Note 2: When display of maximum value, ‘—’ is displayed at
the top with light on and off.
Note 3: When display of minimum value, ‘—’ is displayed at
the top with light on and off.
Note 4: Instantanous power factor is displayed only when
measuring option is designated.
●
Communication Output
RS-485 or LON communication outputs can optionally be
selected
<Communication data>
Following measuring value can be read out by converting input
into PT•CT primary side input.
• Integrated power
• Optional integrated power (present value)
• Optional integrated power (last value)
• Instantanous power
• Voltage r.m.s. value
• Current r.m.s. value
• Instantanous power factor or Current 2 r.m.s. value
• Voltage maximum value
• Valtage minimum value
• Current maximum value
• Current 2 maximum value
Also, start•stop of optional integrated power and reset of
maximum and minimum values of voltage r.m.s.
value and maximum value of current r.m.s. value
can be done through communication.
<RS-485 Communication>
Function: Various measuring values can be read out through
personal computer by command/ response mode.
Readout of measuring value would be made
individually or in block.
Also, control of optional integration and initialization of
maxium and mimimum values can be done
through persomal computer.
System Configuration:
Application Software
RS-232C Port
RS-232C/485 Conveter
RS-485
Personal
Computer
Power
Monitor
Power
Monitor
Power
Monitor
Power
Monitor
Power
Monitor
Terminating
Note: RS-232C/485 Converter is recommended to use our
ML1 in AUTO mode.
Communication specs.: RS-485 Interface
Transmit distance: Maximum about 1.2km
(When use of 24AWG twist pair cable)
Optional integrated power:
䊐䊐䊐䊐䊐
[Wh] (w/o symbol, integer 5 digits)
Instantanous power:
±
䊐䊐䊐
.
䊐
[W] to
±
䊐䊐䊐䊐
[MW] (w/symbol.
floating decimal point 4 digits, minimum
resolution:0.1W)
Voltage r.m.s. value:
䊐䊐䊐
.
䊐
[V] to
䊐䊐䊐䊐
[kV] (w/o symbol, floating
decimal point 4 digits, minimum resolution:0.1V)
Current r.m.s. value:
䊐
.
䊐䊐䊐
[A] to
䊐
.
䊐䊐䊐
[kA] (w/o symbol,
floating decimal point 4 digits, minimum
resolution:0.001A)
Voltage maximum value:
—
䊐䊐䊐
.
䊐
[V] to
—
䊐䊐䊐䊐
[kV] (w/o symbol,
floating decimal point 4 digits, minimum
resolution:0.1V)
Voltage minimum value:
—
䊐䊐䊐䊐
[V] to —
䊐䊐䊐䊐
[kV] (w/o symbol,
floating decimal point 4 digits, minimum
resolution:0.1V)
Current maximum value:
—
䊐
.
䊐䊐䊐
[A] to
—
䊐
.
䊐䊐䊐
[kA] (w/o symbol,
floating decimal point 4 digits, minimum
resolution:0.001A)
Instantanous power factor:
d
䊐
.
䊐䊐䊐
to 1.000 to G
䊐
.
䊐䊐䊐
[COS
φ
]
(w/o symbol, fixed decimal point 4 digits,
minimum resolution:0.001COS
φ
, d:Lead, G:Lag)
kWh LED: Light on during display of integrated power
[kWh].
Wh LED:
Light on during display of optional integrated
power [Wh].
W LED:
Light on during display of instantanous power [w].
V LED:
Light on during display of voltage r.m.s. value [V].
A LED:
Light on during display of current r.m.s. value [A].
COS
φ
LED: Light on during instantanous power factor [COS
φ
]
X10
3
LED: Light on when displaying instantanous value is
kilo unit. Or lighton when integrated power [kWh]
is Mega unit.
X10
6
LED: Light on when displaying instantanous value is
mega unit.
COMM LED: Green light on when RS-485 or LON communi-
cation. As for LON communication, red light on
and off when network parameter is under
construction, and red light on when communica-
tion trouble or service.
SET/ENT Switch: This switch changes-over display of
integrated power, optional integrated power,
instantanous power, voltage r.m.s. value, current
r.m.s. value and instantanous power factor. Also, it
selects parameter setting item and input/output
adjust item.
R, S, T (phase indicator)
Light on phase that the data is displayed in data display.
Current display: R, S, T
Voltage display: R-S, S-T, T-R
R, S, T (3-phase 4-wire system)
(Range switch)
This switch is used for display line change-over,
and for movement column position of setting data
and decimal point position.
