METSO IOP345 Logic control module

When P18=0 the holding brake is controlled via input E2. When E2=0 the brake is applied and with E2=1 the brake will be released. The drive will monitor the state of input E2 to ensure that the brake is released when the motor is energised and running. Once the drive is enabled and the motor energised, if the brake is not released within 0.5 seconds of the motor reaching 10% torque, an error E49 will be reported.With parameter P18=2 (automatic brake control). The brake will be applied depending upon the states of parameters P34 (Software disable), P35 (Allow external disable) and external disable input E1. With P34=0 the brake will be applied regardless of the value of P35 or the state of input E1. When P34=1 the brake will only be applied when external disables are allowed (P35=1) and an external disable applied via E1 (E1=0).

Applying the Holding Brake 

When the drive is disabled with no brake delay the motor is de-energised and the brake is applied immediately as shown in Figure 5-4.In operation, the load is brought to rest and the holding brake is applied before the motor is de-energised. When the load is required to be moved again the motor is energised, and a short time later the holding brake is released. This brake delay during which the brake is applied and the motor is still energised is controlled by parameter P17. Note: the drive will always take 300ms to energise the motor once it is enabled.

Use of PLC Inputs and Output A1 

PLC inputs E1 to E4 and output A1 allow control of the drive via a PLC or other logic controller devices. The use of the inputs and output are partly controlled by parameters. Parameter P37 controls the use of output A1 Input E1 is used independently or in conjunction with parameters P35 & P34 Input E2 is used in conjunction with parameter P18 Parameter P36 controls the use of inputs E3 and E4

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