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AirCare
®
ACM1015 Advanced Technical Manual
PART NUMBERS AND RATINGS
Control for EBM BLDC motor: ACM1015 B1012 Rev A
GENERAL OPERATION
Modbus
®
Host (Master)
An AirCare networked system requires a compatible Modbus host. In most cases this will be an AirCare Automation
Console, but other Modbus devices can be used if configured correctly. Refer to the Network Specification section of this
document for more information.
Modbus Register Assignments
Modbus register assignments are detailed in Table 4.
Modes
ACM1015 operates in one of six selectable modes:
Note as of April, 2008: Please note that the AirCare closed loop control function has not yet been ported to the
EBM platform. This port is planned for June, 2008. If you wish to operate the ACM1015 in closed-loop mode,
please check with AirCare Automation to ensure that closed-loop-compatible firmware has been implemented.
PRELIMINARY: All Closed Loop control modes use a fully programmable PID loop to allow response and stability
adjustments.
Address DIP Switches
Each ACM1015 device in a network must be set to a unique address. The address value is set in binary using the eight
DIP switches of switch bank S1. The selected addresses should be within the range supported by the AirCare console.
Valid addresses for the ACM1015 are 1 through 200. Do not set ACM1015 to address 0. Address 0 is reserved for the
Control Console (MODBUS master). Do not set the ACM1015 to addresses greater than 200, as addresses greater than
200 are reserved.
Mode 0 Network speed control, open loop (default)
Mode 1 Network speed control, closed-loop us i ng analog feedback
Mode 2 Network speed control, closed-loop us i ng motor tach feedback
Mode 3 Analog speed control, open loop
Mode 4 Analog speed control, closed-loop us i ng analog feedback
Mode 5 Analog speed control, closed-loop us i ng motor tach feedback
The Mode is selected using Modbus Register 23. Each mode is explained in detail later in this document.