Sako SKI600, Manual

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015
2.8 Control Loop Terminal Function Table
Functional Specification of Control Loop Terminal
Category Terminal
Number
Functions Specification
Analog
Input/Output
Terminal
AO1
AO1 is able to output analog voltage/current
(total 13 kinds of signals). Jumper Jp4 (for
jumper terminal AO1) can select volt age or
current output mode, and voltage output is
the default one. For current output, just short
the middle and another pin with the jumper
cap. AO2 Outputs analog voltage/current. The
output voltage and current are selected by the
jumper JP6(AO2 jumper). See function code for
details, F6.21, F6.22.(Reference ground: GND)
OUTPUT, 0 ～ 10VDC
voltage. Output voltage
of AO1, AO2 came from
PMW waveform of
CPU. Output voltage
is in direct proportion
to the width of PWM
waveform.
AO2
Relay Output
Terminal
TA1/
TA2
Two-channel programmable relay output
terminal, TA1/TA2, TB1/TB2, TC1/TC2 as many
as 99 kinds. See F7.20.
TA-TB: normal close;
TA-TC: normal open.
Contact compacity:
250VAC/2A (COS
Φ
=1);
250VAC/1A(COS
Φ
=0.4),
30VDC/1A.
TB1/
TB2
TC1/
TC2
Power Port
+10V
-GND
Provide ex10v power supply, which is
generally used as the working power supply
of the external potentiometer. The resistance
range of the potentiometer is 1 KΩ ～ 5 KΩ
Max output current
10mA
+24V
-COM
Provide ex24v, which is generally used
as power supply of the digital input and output
terminal and external sensor.
Max output current
200mA
Communication
Port
A+/B- RS485 communication port
Input and output
signal terminal of
MODBUS-RTU protocol
communication
◇ Control terminal All can input both voltage and current signal, while A12 can only input voltage signal; users
can conduct corresponding jumper on master control board according to signal type.
◇ Connecting week analog signal is easily affected by external disturbance. So wiring should be as short
as possible. The external control line should be set with isolating device or shielding line, and should be
grounded.
◇ Input order signal line and frequency meter should be wired separately with shielding, and away from major
loop wiring.
◇ Control loop wiring should be over 0.75 mm 2 , and STP (shielded twisted pair) is recommended. The connecting
part of control loop terminals should be enameled with tin, or process metal joint with cold pressing.
◇ While connecting analog signal output devices, malfunction may occur because of interference from VFD,
which can be solved by fixing with capacitor or ferrite bead to the analog signal output device.