Control Terminal Functions; Control Source Selection - Emerson PACMotion VFD Series User Manual

Control Terminal Functions

For standard applications and operation, the basic control of the drive and functions of all drive input
terminals can be configured using just two parameters, P1-12 and P1-13. P1-12 is used to define the source
of all control commands and the primary speed reference source. P1-13 then allows fast selection of Analog
and Digital Input functions based on a selection table.

Control Source Selection

P1-12 Function
P1-12 is used to select the main control source of the drive and the main speed reference according to the
following table:
Table 26: P1-12 Function
P1-12 Function
0 Terminal
Control
1 Keypad Control
(Uni-directional)
2 Keypad Control
(Bi-directional)
3 PID Control
4 Fieldbus /
Modbus RTU
5 Slave Mode
6 CANopen
Overview
PACMotion VFD uses a Macro approach to simplify the configuration of the Analog and Digital Inputs. There
are two key parameters which determine the input functions and drive behaviour:
• P1-12 – Selects the main drive control source and determines how the output frequency of the drive is
primarily controlled.
• P1-13 – Assigns the Macro function to the analog and digital inputs.
Additional parameters can then be used to further adapt the settings, e.g.
• P2-30 – Used to select the format of the analog signal to be connected to analog input 1, e.g. 0 – 10 Volt,
4 – 20 mA.
• P2-33 – Used to select the format of the analog signal to be connected to analog input 2, e.g. 0 – 10 Volt,
4 – 20 mA.
• P2-36 – Determines whether the drive should automatically start following a power on if the Enable Input
is present.
• P2-37 – When Keypad Mode is selected, determines at what output frequency / speed the drive should
start, following the enable command, and also whether the keypad start key must be pressed or if the
Enable input alone should start the drive.
The following diagrams and tables provide an overview of the functions of each terminal macro function, and
a simplified connection diagram for each.
48
Control Source Main Speed Ref Notes
Terminals Analog Input 1
Keypad / Motorised Pot /
Terminals Keypad
Keypad / Motorised Pot /
Terminals Keypad
Terminals PID Output
Modbus RTU Fieldbus /
Modbus RTU
Master Drive From Master
CAN bus CAN bus
PACMotion VFD AC Variable Speed Drive User Guide
All control signals are applied to the control terminals.
Functions are determined by P1-13 Macro setting.
When keypad mode is selected, the default operation of
the drive requires the keypad Start & Stop buttons are used
to control the drive. This can be changed using P2-37 to
allow the drive to be started from Digital Input 1 directly.
Enable / Disable control of the drive is through the drive
control terminal strip.
Output frequency is set by the output of the PI Controller.
Control of the drive operation is through a fieldbus
option module mounted in the drive option slot. If no
option module is fitted, control is through the Modbus
RTU interface.
Digital Input 1 must be closed to allow operation.
PACMotion VFD provides an inbuilt Master / Slave function.
A single drive acts as the Master, and connected Slave
drives will mimic the starting and stopping, along with
following the output frequency, with any scaling applied.
Digital Input 1 must be closed to allow operation.
Control of the drive operation is through the CAN Open
Interface.
Digital Input 1 must be closed to allow operation.
GFK-3111A