Safety Stop Function - Mitsubishi Electric FR-D720-0.1K Instruction Manual

2.3.4

Safety stop function

(1) Description of the function
The terminals related to the safety stop function are shown below.
Refer to page 20 for the rated specification of each terminal.
Terminal
Symbol
S1 For input of safety stop channel 1.
∗1
S2 For input of safety stop channel 2.
∗1
For output of safety stop condition.
SAFE
SO The signal is output when inverter output is shut off due to the safety stop
∗2
signal
function.
Common terminal for S1,S2,SO signals. (SC is connected terminal SD
SC
internally.)
SAFE2
RUN
Outputs when an alarm or failure is detected
Outputs when there is no internal safety circuit fault
signal
∗3
SE Common terminal for open collector outputs (terminal RUN)
∗1
In the initial status, terminal S1 and S2 are shorted with terminal SC by shortening wire. Remove the shortening wire and connect the safety relay module
when using the safety stop function.
∗2
In the initial setting, safety monitor output signal (SAFE signal) is assigned to terminal SO. The function can be assigned to other terminals by setting "80
(positive logic) or 180 (negative logic)" to any of Pr. 190, Pr. 192 or Pr. 197 (Output terminal function selection). (Refer to page 120)
∗3
In the initial setting, inverter running (RUN signal) is assigned to terminal RUN. Set "81" to Pr. 190 RUN terminal function selection to assign SAFE2 signal. The
function can be assigned to other terminals by setting "81 (positive logic) or 181 (negative logic)" to any of Pr. 190, Pr. 192 or Pr. 197 (Output terminal function
selection). (Refer to page 120)
∗4
At an internal safety circuit fault, E.SAF or E.CPU is displayed on the operation panel.
.. Specifications differ according to the date assembled. Refer to page 298 to check the SERIAL number.
NOTE
Use SAFE signal for the purpose to monitor safety stop status. SAFE signal cannot be used as safety stop input
signal to other devices (other than the safety relay module.)
SAFE2 signal can only be used to output an alarm or to prevent restart of an inverter. The signal cannot be used as
safety stop input signal to other devices.
(2) Wiring connection diagram
To prevent restart at fault occurrence, connect terminals RUN (SAFE2 signal) and SE to terminals XS0 and XS1, which are
the feedback input terminals of the safety relay module.
By setting Pr.190 RUN terminal function selection = "81 (SAFE2 signal)", terminal RUN is turned OFF at fault occurrence.
Pr. 178 = "60 (initial value)"
Pr. 179 = "25"
Pr. 190 = "81"
Pr. 197 = "80 (initial value)"
START/RESET
Emergency stop button
+24V X0
DC24V
24G
MITSUBISHI MELSEC Safety relay module
QS90SR2SN-Q
NOTE
Changing the terminal assignment using Pr. 190, Pr. 192, and Pr. 197 (output terminal function selection) may affect the
other functions. Set parameters after confirming the function of each terminal.
STOP
COM0 X1 COM1 XS0 XS1 Z00 Z10
K1
Internal
Safety
Circuit
K2
Z01 Z11
Control circuit specifications
Description
∗4
SO (SAFE)*1
monitor
RUN (SAFE2)*1
SE
STF
STF*2
I/O control
STR(STOP)*2
S1
Output
shutoff
S2
circuit
SC
Z20
SD
Z21
*1 Output signals differ by the setting of Pr. 190, Pr. 192
and Pr. 197 (Output terminal function selection).
*2
Input signals differ by the setting of Pr. 178 to Pr. 182
(Input terminal function selection).
Between S1 and SC / S2 and SC
Open: In safety stop mode.
Short: Other than safety stop mode.
OFF: Drive enabled, or drive stop (at
an internal safety circuit fault
ON: Drive stop (no internal safety
circuit fault )
∗4
—
OFF: Internal safety circuit fault
ON: No internal safety circuit fault
—
R/L1 S/L2 T/L3
Inverter
U V W
IM
)
∗4
∗4
∗4
2
27