Kb-electronics KBAC-48 Instrukcja Użytkownika Pobierz pdf (Strona 27)

APPENDIXA–OPTIONALSIACSIGNALISOLATOR(PARTNO.9600)

See SIAC Installation Instructions (Part No. A40149) for details and connections.

Description

The SIAC provides an isolated interface between non-isolated signal sources and the drive. It is used with

the KBAC Series drives to isolate, amplify, and condition DC voltage and current signals from any source

(tach-generators, transducers, PLCs, and potentiometers). It also provides an isolated input to control

motor direction and an isolated +5 Volt power supply for transducer or potentiometer operation. All input

connections are isolated from the AC line and motor wiring. The SIAC installs easily in the KBAC with a snap-in

mounting base and is wired with a connector.

The main features of the SIAC include voltage or current signal inputs. Other features include a power on

LED, a barrier terminal block to facilitate wiring, multi-turn trimpots (SCALE (MAX), OFFSET), and a selectable

jumper for voltage or current signal input selection. An optional accessory for use with the SIAC and KBAC is

an Auto/Manual Switch (Part No. 9481) which selects a signal input from either the SIAC or the Main Speed

Potentiometer.

Table 1 – General Performance Specications

Description Specication Factory Setting

Scale Trimpot (SCALE) Input Voltage Range (Volts DC) 0 to ±2.5 thru 0 to ±25 0 to ±5

Oset Trimpot (OFFSET) Range (% of MAX Trimpot Setting) 0 – ±50 0

Input Current Range (milliamps DC) 4 – 20 —

Forward and Reverse Input Switch Types Dry Contact or Open Collector —

+5V Power Supply Maximum Load Current Rating (milliamps DC) 25 —

Potentiometer Operation (kΩ) 5 —

Input/Output Linearity (%) 0.1 —

Thermal Drift (millivolts per °C) 0.4 —

Operating Temperature Range (°C / °F) 0 – 40 / 32 – 103 —

COMSIG1+5V FWD

REV

-5V COM

IND

PWR

CON1

CUR VOLT

OFFSET

SCALE

VDC

(MAX)

TB1

TB1: Main Speed Potentiometer, Signal Input,

and Direction Switch connections.

J1: Sets the drive for operation with a voltage

or current input signal.

PWR LED: Provides indication that power is applied.

IND LED: Status Indicator (ashing green).

OFFSET: Signal Oset adjustment multi-turn trimpot.

SCALE (MAX): Input voltage adjustment multi-turn trimpot.

CON1: Used to connect the SIAC to the drive.

VDC: Factory use only.

PGM

J7: Factory use only.

Figure 1 – SIAC Layout

1 2 ... 22 23 24 25 26 27 28

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