Hitachi SJ Series - Page 47

4-33
Chapter 4
Safety Function
4.5.5 SDI function
■How SDI function works
The SDI function can monitor that the motor driving
direction does not perform the determined direction safely
during the inverter outputs to the motor.
The SDI function can be used by inputting SDI-A or SDI-B
function individually.
When SDI-A and SDI-B are activated at the same time, SDI-
A is higher priority function.
Releasing of SDI function depends on the activation of SDI
signal input.
The limit direction in the SDI state is determined by limit
direction [oC-18] or [oC-28] in the setting parameters of SJ-
P1. Deceleration time in the SDI starting state is
determined by Deceleration time [oC-16] or [oC-26] in the
setting parameters of SJ-P1.
■Related parameters
No.
Name
Related data
0-11
Safety Function Select
Input 1
05:SDI-A / 15:SDI-B
0-12
Safety Function Select
Input 2
0-13
Safety Function Select
Input 3
0-21
Safety Function Select
Output 1
07:SDI-A monitoring / 17:SDI-
B monitoring
0-22
Safety Function Select
Output 2
0-23
Safety Function Select
Output 3
1-21
SS1-A Zero frequency
0.00 to 590.00Hz
1-51
SDI-A Active mode
00:limit CW(RV)/
01:limit CCW(FW)
1-52
SDI-A delay time
0.00 to 3600.00s
2-21
SS1-B Zero frequency
0.00 to 590.00Hz
2-51
SDI-B Active mode
00:limit CW(RV)/
01:limit CCW(FW)
2-52
SDI-B delay time
0.00 to 3600.00s
0-07
SFS Select
11:STO-A / 12:STO-B / 21:SS1-A
/
22:SS1-B / 31:SBC-A / 32:SBC-B
■Related P1 parameters
No.
Name
Related data
oC-16
SDI-A Deceleration
time
0.00 to 3600.00(s)
oC-18
SDI-A limit direction
00(limit)/01(reverse)
oC-26
SDI-B Deceleration
time
0.00 to 3600.00(s)
oC-28
SDI-B limit direction
00(limit)/01(reverse)