DU–2
Control Wiring Requirements
D run all signal wiring in either a shielded
cable, or a separate steel conduit.
D only connect shield wire at control
terminal block common terminals 3 and 7.
D do not exceed control wiring length of 15
meters (50 feet).
D use Belden 8760 (or equivalent) – 18AWG
(0.750mm2), twisted pair, shielded or 3
conductor.
À
Control
signal cable length is highly dependent on
electrical environment and installation practices. To
improve noise immunity the control terminal block
must be connected to earth ground. Consult
factory for longer control signal cable length applications.
Table 2.DąControl Terminal Block Specifications
Max/Min
Wire Size
mm
2
(A
WG)
2.5-0.5
(14-22)
0.8-0.4
(8-4)
TB3
Terminal
Max/Min Wire T
orque
Nm. (lb.in.)
ATTENTION: The controller is
supplied with an internal 12V
supply. Dry contacts or open
collectors are required for discrete
control inputs. If an external
voltage is applied, component
failure could occur.
ATTENTION: Read the
following sections carefully before
installing the Bulletin 160 SSC.
Control Wiring - Analog Signal Follower
Model
Parameter 59 – [Frequency Source] is used to
select the source of the frequency command.
The frequency source (which controls the
output frequency of the controller) can be
commanded internally using P58 – [Internal
Frequency] or via the Control Terminal Block
(TB3) using a:
D remote potentiometer.
D –10 to +10VDC analog input.
D 4–20mA analog input.
Refer to Chapter 5, parameters 58–60 for
factory default settings.
ATTENTION: Connect and use only
one frequency source at any time. If
more than one frequency source is
connected or in use at the same time,
unintended operation could occur.
If you use P58 – [Internal
Frequency], TB3 – terminal 2 must
be tied to Common (TB3 – terminal 3)
to ensure that unintended operation
does not occur.
Control Wiring - Preset Speed Mode
You can control the output frequency of the
controller via contact closure input to SW1,
SW2, and SW3. A program keypad module is
required to change the factory default settings.
Refer to Chapter 5, parameters 61–70 for the
