12
Frequency inverters
Standard connections
Installation
U X
DC reactor (option)
Short bar
Thermal
overload
relay (option)
Braking resistor
(option)
MCCB
R
S
T
Forward run/stop
Reverse run/stop
External fault
(no contact)
Fault reset
JOG command
Multi-step speed
reference 1
Multi-
function
input
Multi-step speed
reference 2
Frequency
reference
Pulse train input
Frequency setter
2k
Ω
P
P
MEMOBUS
communication
RS-485/422
max 19.2kBPS
R+
R–
S+
S–
Terminal
resistance
AM
AC
(1/2 W. 120
Ω
)
Frequency meter
adjusting potentiometer
Multi-function
analog input 2*
Housing (type : ZHR-3)
Analog monitor
output
0 TO +10 VDC (2 mA)
Pulse monitor
output
(12 VDC
20 mA max. 30
- 70% duty)
Output
frequency
P
FM
Digital operator
frequency setting
potentiometer
min
max
VIN
IIN
GND
+2 +1 – B1 B2
U/T1
V/T2
W/T3
R/L1
S/L2
T/L3
S1
S2
S3
S4
S5
S6
S7
RP
FS
FR
FC
SC
PNP
NPN
Shield connection
terminal
Speed reference
pulse train
(33 kHz max.)
Frequency setting
power supply
(+12 V 20 mA)
Speed frequency
reference
0 to +10 V (20 kΩ) OR
4 to 20 mA (250 Ω)
0 V
P2
P1
MA
MB
MC
PC
Multi-function
photocoupler output
+48 VDC 50 mA or less
Running
Speed
agree
Grounding
Fault
Multi-function
output
250 VAC 1 A or less
30 VDC 1 A or less
IM
: twisted pair shielded wire: shielded wire
P
2*
A housing is required when using the CN2 terminal on the back side of the digital operator.
1m analog input cable (code no. 3G3MV-PCN-CN2) is available for housing on request
A +24 V power supply is required for sequence connection by PNP transistor (+24 V common) .
Shows the following two kinds of connections (factory setting) :
· Input signals (S1 to S7) are non-voltage contacts
· Sequence connection by NPN transistor (0V common)
PHC
PHC
PHC
PHC
PHC
PHC
PHC
24 V
CN2
0 to 10 V
4 to 20 mA
0V
P
Line
filter
1*
1* V7 IP65 types are built-in filter.
Varispeed V7
13
Main circuit
Control Circuit
Terminal Name Function (signal level)
R/L1, S/L2, T/L3
AC power supply input Main circuit power supply input (use R/L1 and S/L2 for single-phase power supply inverter.
Do not use T/L3 of the models less than 0.75 kW for other usage, such as a junction terminal.)
U/T1, V/T2, W/T3
Inverter output For inverter output
B1, B2
Braking resistor connection For braking resistor connection
+2, +1
DC reactor connection Remove the short bar between +2 and +1 when connecting DC reactor (option)
+1, –
DC power supply input For power supply input (+1: positive electrode; – : negative electrode)*
Grounding For grounding (grounding should conform to the local grounding code.)
Type No.
Signal name Function Signal level
Digital input signals
S1
Multi-function input selection 1 Factory setting: runs when CLOSED, stops when OPEN.
24VDC, 8mA
photocoupler
insulation
S2
Multi-function input selection 2 Factory setting: runs when CLOSED, stops when OPEN.
S3
Multi-function input selection 3 Factory setting: "fault reset"
S4
Multi-function input selection 4 Factory setting: "external fault (NO contact)"
S5
Multi-function input selection 5 Factory setting: "multi-step speed reference 1"
S6
Multi-function input selection 6 Factory setting: "multi-step speed reference 2"
S7
Multi-function input selection 7 Factory setting: "JOG command"
SC
Multi-function input selection
Common
Common for control signal
Analog input signals
RP
Speed reference pulse train input 33 kHz max.
FS
Power supply terminal for
frequency setting
+12V (allowable current: 20 mA max.)
FR
Speed frequency reference 0 to +10 VDC (20 kΩ) or 4 to 20 mA (250 Ω), 0 to 20 mA (250 Ω) (resolution 1/1000)
FC
Frequency reference common 0 V
1 (CN2)
Multi-function analog voltage input
Voltage input (between terminals 1 and 3): 0 to 10 VDC (input impedance: 20 kΩ)
Current input (between terminals 2 and 3): 4 to 20 mA (input impedance: 250 Ω)
2 (CN2)
Multi-function analog current input
3 (CN2
Multi-function analog input common
Digital output signals
MA
NO contact output
Factory setting: "fault"
Contact capacity
250 VAC,
1 A or less
30 VDC, 1 A
or less
NC
Contact output
MC
Contact output common
P1
Photocoupler output 1 Factory setting: "running"
Photocoupler output:
+48 VDC, 50 mA or
less
P2
Photocoupler output 2 Factory setting: "at frequency"
PC
Photocoupler output common 0 V
Analog
output
signals
AM
Analog monitor output
Factory setting: "output frequency" 0 to +10 V output
(pulse monitor output available by setting constants. Duty: 30 to 70%)
0 to 10 V 2 mA
or less
Resolution: 8 bits
AC
Analog monitor common 0 V
RS-485/422
R+
Communication input (+)
For MEMOBUS communication
operation by RS-485 or RS-422 communication is available.
RS-485/422
MEMOBUS
protocol
19.2 kBPS max.
R–
Communication input (–)
S+
Communication output (+)
S–
Communication output (–)
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