Control Connections; General; Default Terminal Functions - Emerson Powerdrive F300 User Manual

Safety Product Mechanical
information information installation
4.12

Control connections

4.12.1

General

Table 4-22 The control connections consist of:
Function Qty
Single ended analog Mode, offset, invert, scaling,
2
input destination
Analog output 2 Source, scaling, mode
Destination, invert, logic
Digital input 3
select
Input / output mode select,
Digital input / output 3 destination / source, invert,
logic select
Relay 2 Source, invert
Drive enable (Safe
1
Torque Off)
+24 V User output 1 Source, invert
0V common 5
+24 V External input 1 Destination, invert
Key:
Indicates the parameter which is being controlled
Destination parameter:
by the terminal / function
Indicates the parameter being output by the
Source parameter:
terminal
Analog - indicates the mode of operation of the
terminal, i.e. voltage 0-10 V, current 4-20 mA etc.
Digital - indicates the mode of operation of the
Mode parameter:
terminal, i.e. positive / negative logic (the Drive
Enable terminal is fixed in positive logic), open
collector.
All analog terminal functions can be programmed in menu 7.
All digital terminal functions (including the relay) can be programmed in
menu 8.
The control circuits are isolated from the power circuits in the
drive by basic insulation (single insulation) only. The installer
must ensure that the external control circuits are insulated
from human contact by at least one layer of insulation
WARNING (supplementary insulation) rated for use at the AC supply
voltage.
If the control circuits are to be connected to other circuits
classified as Safety Extra Low Voltage (SELV) (e.g. to a
personal computer), an additional isolating barrier must be
included in order to maintain the SELV classification.
WARNING
If any of the digital inputs (including the drive enable input)
are connected in parallel with an inductive load (i.e.
contactor coil), then suitable suppression (i.e. diode or
varistor) should be used on the coil of the load. If no
CAUTION
suppression is used then over voltage spikes can cause
damage to the digital inputs and outputs on the drive.
Ensure the logic sense is correct for the control circuit to be
used. Incorrect logic sense could cause the motor to be
started unexpectedly.
Positive logic is the default state for the drive.
CAUTION
N
NOTE
Any signal cables which are carried inside the motor cable (i.e. motor
thermistor) will pick up large pulse currents via the cable capacitance.
The shield of these signal cables must be connected to ground close to
the point of exit of the motor cable, to avoid this noise current spreading
through the control system.
98
Electrical Getting Basic
installation started parameters
Control parameters Terminal
available number
25, 26, 27
22, 23, 24
41, 42, 71,
1, 4, 9, 21,
Running NV Media Card
Optimization
the motor Operation
N
NOTE
The Safe Torque Off drive enable terminal is a positive logic input only. It
is not affected by the setting of Input Logic Polarity (08.029).
N
NOTE
The common 0 V from analog signals should, wherever possible, not be
connected to the same 0 V terminal as the common 0 V from digital
5, 6
signals. Terminals 1, 4 and 9 should be used for connecting the 0V
common of analog signals, and terminals 21 and 28 for digital signals.
7, 8
This is to prevent small voltage drops in the terminal connections
causing inaccuracies in the analog signals.
Figure 4-47 Default terminal functions
72
Aux 24 V supply
29
0V common External
24 V supply
3
Analog frequency/speed
28
reference 1 & 2
2
4 - 20 mA
Input
Single ended
0 - 10V input
Speed / frequency
Torque (active
current)
Digital I/O
Drive active
Reset
Run forward
Fire mode enable
Analog input 1/
input 2 select
Unassigned
Safe Torque Off/
Drive enable*
Relay
Drive OK
Unassigned
*The Safe Torque Off / Drive enable terminal is a positive logic input only.
** 0V common is connected to ground internally on Frame size 9 and 10.
Onboard Advanced Technical
Diagnostics
PLC parameters data
1 9 41 42
21 29
71 72
1
2
0V common**
4
5
0V common**
4
6
7
8
9
0V common**
0V common**
21
+24 V
3
22
23
24
25
26
27
0V common**
28
29
COM
41
NC
42
NO
44
COM
71
NC
72
NO
74
Powerdrive F300 User Guide
UL listing
information
44
74
Relay 1
(Over voltage
category II)
Relay 2
(Over voltage
category II)
Issue Number: 2