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

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98 Powerdrive F300 User Guide
Issue Number: 2
4.12 Control connections
4.12.1 General
Table 4-22 The control connections consist of:
Key:
All analog terminal functions can be programmed in menu 7.
All digital terminal functions (including the relay) can be programmed in
menu 8.
N
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.
N
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
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
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.
This is to prevent small voltage drops in the terminal connections
causing inaccuracies in the analog signals.
Figure 4-47 Default terminal functions
*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.
Function Qty
Control parameters
available
Terminal
number
Single ended analog
input
2
Mode, offset, invert, scaling,
destination
5, 6
Analog output 2 Source, scaling, mode 7, 8
Digital input 3
Destination, invert, logic
select
25, 26, 27
Digital input / output 3
Input / output mode select,
destination / source, invert,
logic select
22, 23, 24
Relay 2 Source, invert
41, 42, 71,
72
Drive enable (Safe
Torque Off)
1 29
+24 V User output 1 Source, invert 3
0V common 5
1, 4, 9, 21,
28
+24 V External input 1 Destination, invert 2
Destination parameter:
Indicates the parameter which is being controlled
by the terminal / function
Source parameter:
Indicates the parameter being output by the
terminal
Mode parameter:
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
terminal, i.e. positive / negative logic (the Drive
Enable terminal is fixed in positive logic), open
collector.
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
(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.
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
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.
WARNING
WARNING
CAUTION
CAUTION
NOTE
NOTE
NOTE
0V common External
24 V supply
4-20mA
Input
Single ended
0 - 10V input
1
2
21
3
22
23
24
25
26
27
28
29
41
71
44
74
42
72
Fire mode enable
Reset
Drive active
+24 V
Run forward
Unassigned
Unassigned
Safe Torque Off/
Drive enable*
Analog input 1/
input 2 select
Drive OK
Speed / frequency
Analog frequency/speed
reference1&2
9
7
8
Torque (active
current)
0V common**
0V common**
0V common**
COM
COM
NC
NC
NO
NO
Relay 1
(Over voltage
category II)
Relay 2
(Over voltage
category II)
1
9
21
29
41
71
42
72
44
74
Aux 24 V supply
Digital I/O
Relay
6
4
0V common**
5
4
0V common**