Allen-Bradley 160 SSC, Installation Manual

Page: 19 / 58

Chapter 2 -
2–6
Control Wiring Requirements
run all signal wiring in either a shielded cable,
or a separate metal conduit.
only connect shield wire at control terminal
block common terminals TB3-3 and TB3-7.
do not exceed control wiring length of 15
meters (50 feet). Control signal cable length
is highly dependent on electrical environment
and installation practices. To improve noise
immunity the control terminal block common
must be connected to earth ground.
use Belden 8760 (or equivalent) — 18AWG
(0.750mm
2
), twisted pair, shielded or 3
conductor.
Table 2.F Control Terminal Block Specifications
Terminal
Block
Max/Min
Wire Size
mm
2
(AWG)
Max/Min
Torque
Nm. (lb.in.)
TB3 2.5–0.5
(14–22)
0.8–0.4
(8–4)
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 damage could occur.
ATTENTION: The drive start/stop
control circuitry includes solid-state
components. If hazards due to
accidental contact with moving
machinery or unintentional flow of
liquid, gas or solids exist, an
additional hardwired stop circuit is
required to remove AC line power to
the drive. When AC input power is
removed, there will be a loss of
inherent regenerative braking effect
and the motor will coast to a stop. An
auxiliary braking method may be
required.
Control Wiring - Analog Signal Follower
Model
You can control the output frequency of the
controller via the Control Terminal Block (TB3)
using a remote potentiometer, a –10 to +10 VDC
analog input, a 4–20mA analog input, or use
P58 – [Internal Frequency]. Important: Only
one frequency source may be connected at a time.
If the frequency reference potentiometer and the
4–20 mA reference are connected at the same
time, an undetermined frequency reference will
result.
Control Wiring - Preset Speed Model
You can control the output frequency of the
controller via the Control Terminal Block (TB3)
using dry contacts or open collector inputs to
SW1, SW2, and SW3 or use P58 – [Internal
Frequency]. A program keypad module is
required to change the factory default settings.
Refer to Chapter 5, parameters 61–68 for the
eight preset frequency factory default settings and
switch configurations.
Wiring Diagrams
Important: Refer to the diagrams on the
following pages for control wiring information.