19
Control Terminal Functions
The following is a description of the functions of the control terminals.
Many of these terminals have multiple functions determined by
parameter settings.
Terminal No.
Function
01, 02, 03
Form C relay output. Maximum 240 VAC, 2 A.
Minimum 24 VDC, 10 mA or 24 VAC, 100 mA.
(Location of Form C relay output varies with unit
type. See connection diagram with unit for
location.)
04, 05
30 VAC, 42.5 VDC, 1 A relay output can be used
for indicating status and warnings.
12, 13
Voltage supply to digital inputs and external
transducers. For the 24 VDC to be used for digital
inputs, switch 4 on the control card must be closed,
position on. The maximum output current is 200 mA.
16 - 33
Digital inputs. R
= 2 kohm. <5 V = logical 0,
>10 V = logical 1. See parameters 300 through
307,
Digital Inputs
.
20
Common for digital inputs.
39
Common for analog and digital outputs.
42, 45
Analog and digital outputs for indicating frequency,
reference, current and torque. The analog signal
is 0 to 20 mA, or 4 to 20 mA at a maximum of
500
Ω.
The digital signal is 24 VDC at a minimum
of 600
Ω
. See parameters 319-322,
Analog/digital
Outputs
.
50
10 VDC, 17 mA maximum analog supply voltage to
potentiometer and thermistor.
53, 54
0 to 10 VDC voltage input, R = 10 k
Ω
.
55
Common for analog inputs. This common is
isolated from the common of all other power
supplies. If, for example, the drives 24 VDC
power supply is used to power an external
transducer which provides an analog input signal,
terminal 55 must be wired to terminal 39.
Output Signals
The drive also produces output signals that are carried through either
the RS-485 serial bus or terminals 42 and 45. Output terminals 42 and
45 operate in the same manner as the inputs. These terminals can be
programmed for either a variable analog signal in mA or a digital signal
(0 or 1) in 24 VDC. In addition, the terminals can provide a pulse
reference of 0 to 32,000 pulses. Output analog signals generally report
the drive frequency, current, torque and so on to an external controller
or system. Digital outputs can be control signals used to open or close
a damper, for example, or send a start or stop command to auxiliary
equipment.
Additional terminals are 01, 02, and 03, which are a Form C relay
output. Terminals 04 and 05 are a 1 A low voltage relay output.
Terminals 12 and 13 provide 24 VDC low voltage power, often used to
supply power to the digital input terminals (16-33). Those terminals
must be supplied with power from either terminal 12 or 13, or from a
customer supplied external 24 VDC power source. Improperly
connected control wiring can be the cause of a motor not operating or
the drive not responding to a remote input.
Programming Control Terminals
Control terminals must be programmed. Each terminal has specific
functions it is capable of performing and a numbered parameter
associated with it. See the table below for associated parameter
numbers. The setting selected in the parameter enables the function of
the terminal.
It is important to confirm that the control terminal is programmed for the
correct function. See
Control Panel
for details on operator interface and
changing parameters.
In addition, the input terminal must be receiving a signal. Confirm that
the control and power sources are wired to the terminal. Then check
the signal.
Signals can be checked in two ways. Relay status can be selected in
the display using the [DISPLAY MODE] key (see
Display Modes
), or a
voltmeter may be used to check for voltage at the control terminal.
In summary, for proper drive functioning, the drive control terminals
must be:
1. wired properly
2. programmed correctly for the intended function
3. powered
4. receiving a signal
Term
16 17 18 19 27 29 32 33 53 54 60 42 45 1-3 4-5
Para 300 301 302 303 304 305 306 307 308 311 314 319 321 323 326
Control terminals must be programmed. Each terminal has specific functions it is capable of performing and a numbered parameter associated with it. The setting
selected in the parameter enables the function of the terminal.
Control Terminals and Associated Parameter
