ABB DSPC170 SPC 170H processor module
The control compartment incorporates the hardware for the control,
monitoring and protection functions of the drive, and the
communication interfaces to the local control panel and to the remote
control devices.
Depending on the control concept of the drive sys tem, the remote control devices include a higher level control system and / or remote operator sta tions.
This section provides a brief functional overview of the main hardware
components of the control system and their interconnection.
3.2.1 Local control panel
The local control panel on the door of the control
compartment serves as the basic user interface for
monitoring, control, operation of the drive, and
setting of parameters.
For further information, see Chapter 8 - Operation
and Chapter 9 - CDP control panel.
3.2.2 AMC circuit board
Overview
The AMC circuit board is the major component of
the control system of the drive and performs general drive, motor control, and closed loop functions. The main internal control devices and the
peripheral input and output interfaces to the customer communicate with the AMC circuit board via
optical fibers.
For information on the devices present in
the control compartment of the drive, see
wiring diagrams.
For 24 V circuits the ATO style blade fuses
rated 3 A, 32 V are used.
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References
—
3-2 Control compartment
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3-2
1. IOEC modules with analog and digital inputs
and outputs
2. Power supplies, contactors, auxiliary relays
3. AMC circuit board
4. 24 V power distribution terminals

The circuit board is fitted with a Motorola DSP pro cessor and features two PPCS and eight DDCS
communication channels. The communication
channels are used for high speed data transfer via
the INT circuit boards to the Phase-INT circuit
boards inside the phase modules.
Control tasks
The AMC circuit board has specific control and
closed-loop tasks assigned to it. It processes drive
and status information, performs the speed and
torque control tasks, and monitors the operation
of the drive.
The AMC circuit board continuously monitors all
relevant drive variables (eg, speed, torque, current,
voltage). Pre-programmed protection functions
ensure that these variables remain within certain
limits in order to maintain safe operation of the
drive. These internal functions are not programma ble by the user.
Optionally, the AMC circuit board can monitor sig nals from external equipment.These can be acti vated and adjusted with Parameters.
Other general control, protection and monitoring
tasks regarding the whole drive include control and
monitoring of:
• Main circuit breaker
• Grounding switch
• Door locking system
• Cooling system
Parameters
The control system is configured, customized, and
tuned with a set of application parameters. The
application parameters are organized in functional
groups and have factory-set default values.
The default parameter values are adjusted during
commissioning to the specific application of the
drive in order to activate the specific control, mon itoring and protection functions for the driven pro cess, and to define the signals and data
transferred between drive and external equipment.
The parameters and parameter groups referred to
in the signal allocation tables in this chapter are
valid for drives with software version LDOI6xxx
revision "-" and later versions.
Main circuit breaker
—
The main circuit breaker (MCB) is
an important switching and pro tection device of the drive system.
Therefore it must only be con trolled and monitored by the
drive.
—
References
—
3-3 AMC circuit-board
location
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3-3
1. AMC circuit board
2. INTerface circuit board
1
2
For further information on the parame ters for signal allocation, signal type
selection, signal inversion, scaling, and fil tering, see signal and parameter table.
For further information, see
• Main circuit breaker engineering
guideline
• Important note on main circuit
breaker