R.T.A. s.r.l. – XPETME05 – 11/20
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STO1 and STO2 inputs structure scheme
MONITOR output structure
DRIVE
R2
R1 (1W)
In+
Vin = 24 Volt
R1 = 3.3 KOHM
R2 = 390 OHM
18 Volt < Vin < 27 Volt
H
0 Volt < Vin < 3 Volt
L
DRIVE
Out
22
Vmax = 45 Volt
Imax = 50 mA
Vsat 0.8 Volt (at 10 mA)
≤
Out
24
NOTE:
Insert a protection diode in parallel with the load
in case of inductive load.
(15a)
(165b)
Fig. 16 – Inputs and outputs scheme.
Emergency
Stop button
4
3
6
5
STO1+
STO1-
STO2+
STO2-
0V
Safety Unit
8
7
EDM+
EDM-
Output
Monitor
Input
Drive
Fig. 17 – Wiring to SAFETY UNIT example.
