- 8 -
(2) To wire the PROFIBUS-DP master and the terminal for the SI-P1/V7 unit, use a shielded twisted-pair cable and
do the following.
1)
The following chart shows the applicable cable sizes for the terminal block JP3.
[ Terminal: MINI COMBICON series, made by Phoenix Contact Co., Ltd. ]
I
VAC
［
mm
2
］
AWG
［
A
］
［
V
］
Twisted cable
0.14
－
1.5
28
－
16
8
160
Single cable
0.14
－
1.5
28
－
16
8
160
UL
－
30
－
14
8
300
CSA
－
28
－
16
8
300
2) Refer to Fig.3 for an illustration of how the end of the connecting cable on the SI-P1/V7 unit’s side should be prepared.
3) Use a thin screwdriver, less than 2.5mm wide and less than 0.4mm thick, to loosen the terminal screw.
4) Connect the SI-P1/V7 unit’s terminal block No. 3 with the PROFIBUS-DP master’s No. 8 pin
and connect the SI-P1/V7 unit’s terminal block No. 4 with the PROFIBUS-DP
master’s D-SUB No.3 pin. (See Fig.2.)
5) Insert the cable from the bottom of the terminal block.
6) Tighten the terminal screw so that the cable cannot be removed.
(Tightening torque: 0.22 to 0.25 [N
・
m])
6
SETTING
6.1 Setting of SI-P1/V7 Unit
6.1.1 Address Switch
Rotary address switches to set the slave address on the PROFIBUS-DP are provided.
Setting address switches 1 and 2 on the SI-P1/V7 unit can be used to set the inverter address on the PROFIBUS-DP.
To Set the address, do the following.
Address = (setting of address switch 2)
×
10 + (setting of address switch 1)
×
1
Example
）
To set the address to 15.
Set address switch 2 to "1".
Set address switch 1 to "5".
6.1.2 Termination Resistor Selector Switch
To reduce the reflection of the signal and stabilise communications, a termination resistor must be attached on the end unit of the
transmission line. When the SI-P1/V7 unit is connected as the end unit of the communications line, termination ON the
termination resistor selector switch of the SI-P1/V7 unit will connect the termination resistor. Termination resistors do not have
to be mounted externally.
ON
Termination Resistor Selector Switch
With termination
resistor (Switch ON)
Without termination
resistor (Switch OFF)
ON
1
Stripped section of wire:
approx. 5.5mm long
Cable
Fig. 3 Connection Cable Termination
at Bus Connection Terminal of the SI-
P1/V7 Unit
Set to 1.
Address switch 2
0
12
34
5
67
89
Address switch 1
Set to 5.
0
12
34
5
67
89
