In most cases, the victim should immediately call the police if the abuser doesn't keep to ("violates") the terms of the PFA order. According the PFA Act, the police can and should arrest the abuser for any violation of the PFA order. The only exception is that the police cannot arrest an abuser for not paying expenses and support as ordered.
A defendant who violates a PFA order can be arrested and charged with a crime called indirect criminal contempt. The victim may be asked to testify about the violation at a court hearing. If the court finds the defendant guilty of violating the PFA order, the court can give jail time, probation, and/or fines. Even though the police may arrest and charge an abuser for indirect criminal contempt, the abuser may be released before the hearing. Victims should consider talking to a domestic violence advocate about steps to take to stay safe.