SAMCO-vm05 Series (SHF/SPF, SBT)

Terminal Connection Diagrams

Main circuit connections

200V systems


Connection of Control Circuit Terminal



Frequency setting using variable resistor
  • Use a 5 kO variable resistor with a rating of 0.3 O or more. (Function code Cd002 = 3 or 5)
  • Use shielded wires. Connect the terminal end of the shielding to each common terminal and leave the other end open.
  • The control circuit has analog input channels VRF1 and IRF/VRF2. A variable resistor can be connected to each of the two channels. When connecting a variable resistor using the internal power terminals of the inverter, connect the resistor to the following power terminals:
    • VRF1: Connect the variable resistor to the +V1 terminal.
    • IRF/VRF2: Connect the variable resistor to the +V2 terminal.

Note: When using two variable resistors, do not connect them to the same terminal.



Control circuit terminal

Symbol Terminal Description
  DCM1
DCM2
Digital signal common terminals
  • Common terminals for digital I/O signal and for +24 V power supply
Input
terminals
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
Multifunctional input terminals (Function selection with Cd630 to Cd637)
  • Signal input "on" by shorting with either DCM1 or DCM2
  • Signal input "off" by disconnecting from either DCM1 or DCM2
ACM Analog signal common
terminal
  • Common terminal for analog signals
+V1 Variable resistor connection
terminal for
frequency setting VRF1
  • Use a 5 kΩ variable resistor with a rating of 0.3 W or more. (Function code Cd002 = 3 or 5)
  • Power cannot be supplied externally from this terminal. Connect only a variable resistor.
+V2 Variable resistor connection
terminal for frequency setting VRF2
VRF1 Analog voltage
input terminal
  • Input 0 to 10 VDC. When frequency setting is controlled by external input, the command frequency is proportional to the input signal voltage and the set gain frequency (Cd055) is applied when the input signal is 10 V.
    (When the setting of function code Cd002 specifies external control of VRF1.)
  • The input impedance is about 31 kO.
  • The input voltage range can be changed from 0 to 5 V using the corresponding function code.
IRF/VRF2 Analog current/
voltage input terminal
(for current and
voltage input)
  • Current or voltage input (IRF or VRF2) can be selected using the corresponding function code
  • When frequency setting is selected, current input IRF or voltage input VRF can be selected using Cd002.
  • The code for selecting IRF or VRF2 depends on the function.
  • When VRF2 is selected, the hardware configuration is the same as VRF1.
  • When IRF is selected, input 4 to 20 mA DC. When frequency setting is controlled by external input, the command frequency is proportional to the input signal voltage and the set gain frequency (Cd063) is applied when the input signal is 20 mA. When IRF is selected, the input impedance is about 500 Ω.
Output
terminals
+24V +24 V power output
  • 24 VDC power (maximum allowable output current: 150 mA)
AOUT1
AOUT2
Internal analog output terminal (2-channel output)
  • Use the analog signal common terminal (ACM) as ground.
  • One monitor item is selected from Cd126 (AOUT1) and Cd128 (AOUT2), and indicated by an analog output.
  • The output signal voltage is from 0 to 10 VDC and the maximum allowable current is 15 mA. (Set the output coefficient because the output voltage decreases as the output current increases.)
  • The signal output can be varied from 0 to 20 times using function codes Cd127 (AOUT1) and Cd129 (AOUT2).
DO1
DO2
DO3
Multifunctional
output terminal
(Function selection with Cd638 to Cd640)
  • The open collector output is 24 VDC and 50 mA.
  • The signals turn on depending on the function selected.
  • Use DCM1 or DCM2 digital signal common terminals as ground.
FA
FB
FC

Alarm signal output
terminals and
multifunctional
contact output

  • These terminals output contact signals indicating that the protective function has stopped the inverter.
  • Cd674: Multifunctional contact outputs according to the relay contact output setting.
    • Normal: FA-FC open, FB-FC closed
    • Abnormal: FA-FC closed, FB-FC open
    • Contact capacity: 250 VAC, 0.3 A
Communication
terminals
TRA
TRB
RS485 serial communication terminals (See the explanation of the serial communication function.)
  • Send/receive terminal
RXR
  • Terminating resistor shorting terminal
  JP1 Upgrade jumper
  • Do not connect anything to these terminals except when upgrading.




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