Electrical Installation33.5 Control Circuit WiringYASKAWA SIEPC71061753A GA500 Technical Manual 85Table 3.8 Control Circuit Monitor Output TerminalsType Terminal Name (Default) Function (Signal Level)Monitor OutputMP Pulse train output(Output frequency)32 kHz (maximum)Refer to “Pulse Train Output” (page 89) for more informaion.AM Analog monitor output(Output frequency)Select voltage or current output.• 0 V to 10 V/0% to 100%• 4 mA to 20 mA (Receiver recommended impedance: 250 Ω)Note:Select using jumper switch S5 and H4-07 [Terminal AM Signal Level Select].AC Monitor common 0 V■ External Power Supply Input TerminalsRefer to Table 3.9 for a list of the functions of the external power supply input terminals.Table 3.9 External Power Supply Input TerminalsType Terminal Name (Default) FunctionExternal Power Supply InputTerminalsPS External 24 V power supply input Supplies backup power to the drive control circuit, keypad, and option board.21.6 VDC to 26.4 VDC, 700 mAAC External 24 V power supply ground 0 VAlarm Display When You Use External 24 V Power SupplyWhen you use an external 24 V power supply, an alarm is detected as shown in Table 3.10 if you set o2-23[External 24V Powerloss Detection] and o2-26 [Alarm display at ext. 24V power] for the main circuit powersupply. Set the alarm display as needed.Table 3.10 Power Supply Used and the Alarm DisplayMain circuit power supply External 24 V power supplyo2-23[External 24V PowerlossDetection]o2-26[Alarm display at ext. 24Vpower]Alarm displayON ON - - -ON OFF 0 [Disabled] - -1 [Enabled] - L24v [Loss of External Power 24Supply]OFF ON - 0 [Disabled] "Ready" LED light flashesquickly- 1 [Enabled] EP24v [External Power 24VSupply]■ Serial Communication TerminalsRefer to Table 3.11 for a list of serial communication terminals and functions.Table 3.11 Serial Communication TerminalsType Terminal Terminal Name Function (Signal Level)Modbus CommunicationD+ Communicationinput/output (+)MEMOBUS/Modbus communicationsUse an RS-485 cable to connect the drive.Note:Set DIP switch S2 to ON to enable thetermination resistor in the last drive in aMEMOBUS/Modbus network.• RS-485• MEMOBUS/Modbus communication protocol• Maximum 115.2 kbpsD- Communicationoutput (-)AC Signal ground 0 V◆ Control Circuit Terminal ConfigurationThe control circuit terminals are in the positions shown in Figure 3.35.
