Eurotherm Drives 584S, Product Manual, Page: 37 / 176

Chapter 2 - PRE-INSTALLATION PLANNING
2-14 584S Frequency Inverter
Control Terminals
The control terminals are identical for all variants of the 584S Frequency Inverter. The functions of the control
board terminals are described in Table 2.5. See Chapter 1 "
ELECTRICAL RATINGS ", Table 1.1 for control
terminal specification.
NOTE: In Table 2.5 the names of the parameters are presented in a different font, eg.
MAX
SPEED
, to indicate that they may be adjusted using the MMI (see Chapter 4).
Table 2.5 - Control Board Terminal Descriptions
Terminal
Number Terminal Description
1 SPEED SETPOINT. Analogue Input
An input in the range 0 to 10V, or
±
10V, selectable from the MMI. This signal sets
the motor speed in the range:
+10V =
MAX SPEED
forward
0V =
MIN SPEED
-10V =
MAX SPEED
reverse
Where
MAX
and
MIN SPEED
s are set from the MMI
Input impedance = 94k
Ω
.
2 TRIM. Analogue Input
An input in the range
±
10V. This signal adjusts the motor speed as follows:-
(a) When trim is acting on an analog type main setpoint i.e., 0
➠
10V or 0
➠
20mA, then:
+10V =
MAX SPEED
forward
0V =
MIN SPEED
-10V =
MAX SPEED
reverse
Where
MAX
and
MIN SPEED
s are set from the MMI.
(b) When trim is acting on a digital type main setpoint i.e., preset speed or serial
link setpoint, then:
+10V =
LIMIT FREQUENCY
forward
0V = 0Hz
-10V =
LIMIT FREQUENCY
Reverse
Where limit frequency is set from MMI.
Note:- Regardless of trim scaling, all setpoints are ultimately clamped between
MAX SPEED
and
MIN SPEED
.
Input impedance = 94k
Ω
.
3 + CURRENT LOOP. Analogue current loop input (connect return to terminal 4)
A current loop input in the range 0 - 20mA, 20 - 0mA, 4 - 20mA or 20mA - 4mA
as selected from the MMI. This input allows automatic adjustment of motor speed.
For example, with 4 - 20mA selected:
4mA =
MIN SPEED
20mA =
MAX SPEED
Where
MAX
and
MIN SPEED
s are set from the MMI.
Input impedance = 235
Ω
.
4 0V. Reference
This terminal provides a zero volt reference for analogue signals only or current
loop connection.
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