Hitachi SJ Series Safety Function Manual page 47

Chapter 4
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
Safety Function Select
0-11
Input 1
Safety Function Select
0-12
Input 2
Safety Function Select
0-13
Input 3
Safety Function Select
0-21
Output 1
Safety Function Select
0-22
Output 2
Safety Function Select
0-23
Output 3
1-21 SS1-A Zero frequency
1-51 SDI-A Active mode
1-52 SDI-A delay time
2-21 SS1-B Zero frequency
2-51 SDI-B Active mode
2-52 SDI-B delay time
0-07 SFS Select
■Related P1 parameters
No. Name
SDI-A Deceleration
oC-16
time
oC-18 SDI-A limit direction
SDI-B Deceleration
oC-26
time
oC-28 SDI-B limit direction
4-33
Safety Function
Related data
05:SDI-A / 15:SDI-B
07:SDI-A monitoring / 17:SDI-
B monitoring
0.00 to 590.00Hz
00:limit CW(RV)/
01:limit CCW(FW)
0.00 to 3600.00s
0.00 to 590.00Hz
00:limit CW(RV)/
01:limit CCW(FW)
0.00 to 3600.00s
11:STO-A / 12:STO-B / 21:SS1-A
/
22:SS1-B / 31:SBC-A / 32:SBC-B
Related data
0.00 to 3600.00(s)
00(limit)/01(reverse)
0.00 to 3600.00(s)
00(limit)/01(reverse)