PWM brushless DC motor drive
MODBUS | ACM1004 AirCare Automation

The ACM 1004 is powered from the MODBUS network (requires AirCare Network power supply ACM 1005, ACM 1008, or bus power through the RJ45 connection). ACM1004 supports MODBUS ® RTU protocol over RS485. The baud rate is fixed at 9600, 8, n, 1.

The ACM1004 assigns one MODBUS address (ID) for each controlled motor. ACM1004 supports up to four motors (addresses).

Two RJ45 jacks provide IN/Out connections for network cables. Thus, like the AirCare VariPhase™, the ACM1004 can be daisy chained to the AirCare Console.

When power is applied, the ACM1004 checks for valid motor control connections. The ACM1004 occupies one MODBUS® address for each motor it detects.The MODBUS® address of the first motor (connected to channel 0) is set using the binary coded address DIP switch. If four motors are connected, the ACM1004 will occupy the base address and the next three consecutive addresses.