9907-164 Connection examples of two-wire and three-wire sensors The figures give examples of connections for a two-wire or three-wire sensor/transmitter that is supplied by the auxiliary voltage output of the drive. Note: Do not exceed the maximum capability of the auxiliary 24 V (200 mA) output. Note: The sensor is supplied through its current output and the drive feeds the supply voltage (+24 V). The output signal must be 4…20 mA, not 0…20 mA. AI2 Process actual value measurement or reference, 0(4)…20 mA, Rin AGND = 137 ohm +24V Auxiliary voltage output, non-isolated, DGND +24 V DC, max. 200 mA 4…20 mA Two-wire sensor/transmitter + - P I AI2 Process actual value measurement or reference, 0(4)…20 mA, Rin AGND = 137 ohm +24V Auxiliary voltage output, non-isolated, DGND +24 V DC, max. 200 mA (0)4…20 mA Three-wire sensor/transmitter + - OUT P I 66 Electrical installation Control cable connection procedure Do the connections according to the macro in use. For the default macro connections, refer to the diagram on page 63. Keep the signal wire pairs twisted as near to the terminals as possible to prevent inductive coupling. 1. Strip a part of the outer shield of the control cable for grounding. 2. Use a cable tie to ground the outer shield to the grounding tab. 3. Strip the control cable conductors. 4. Connect the conductors to the correct control terminals. Torque the terminals to 0.5 N·m (0.4 lbf·ft). 5. Connect the shields of the twisted pairs and grounding wires to the SCR terminals. Torque the terminals to 0.5 N·m (0.4 lbf·ft). 6. Mechanically attach the control cables on the outside of the drive. Electrical installation 67 Auxiliary voltage connection The drive has an auxiliary 24 V DC (±10%) voltage connection. Depending on the application, you can use the connection • To supply external power to the drive • To supply power from the drive to external option modules Connect the external supply or module to the +24V and DGND terminals. For more information on how to feed auxiliary power to the drive, refer to BAPO-01 auxiliary power extension module on page 157. For auxiliary voltage input specifications, refer to Control connection data on page 95. RC RA RB +24V DGND DCOM SGND S+ DI1 DI2 S1 S2 68 Electrical installation Option modules Typically, option modules are fitted at the factory according to the drive variant or order. WARNING! Obey the instructions in chapter Safety instructions on page 13. If you ignore them, injury or death, or damage to the equipment can occur. The drive has two option module slots: • Front option: Communication module slot under the front cover. • Side option: Multifunction extension module slot on the side of the drive. For more information, refer to the option module manual for installation and wiring instructions. For information on the side-mounted options: • BTAC-02 pulse encoder interface module on page 133 • BREL-01 relay output extension module on page 151 • BAPO-01 auxiliary power extension module on page 157 Before you start the work, stop the drive and do the steps in section Precautions before electrical work on page 15. To install a front option 1. Remove the front cover. 2. Carefully align the option module with Slot 1 in the front of the drive. 3. Fully push the option module into position. 4. Push the plastic locking tab until it locks. 5. Tighten the locking screw. 6. Connect the applicable control cables according to Connecting the control cables on page 62. 4 5 6 Electrical installation 69 To remove a front option 1. Disconnect the control cables fro |
