ATyStM - 542931D - SOCOMEC
20 EN
11.3. Network congurations
Conguration of the network is done through the ATyStM autoconguration feature. Refer to section «13.4.
Programming», page 26.
11.3.1. Three phase without neutral network
For three-phase networks without neutral (3NBL) 400Vac, a neutral must be recreated to allow the ATyS M to operate at
230Vac. To recreate the neutral, we recommend the use of quantity 2x 400VA auto-transformers connected as shown
below. The neutral position must be dened as neutral on the left or neutral on the right in advance and then wired
accordingly. The example below shows the wiring for a product congured with neutral on the left
A new product must have the neutral conguration pre-programmed as on the left or on the right at the
rst start up using a real (not a recreated) 3 phase + neutral supply.
11.3.1.1. Auto-transformer connections
Reference 1599 4121
I II
207
L32L22L12L31L21L11
L1
2 4 6 8
1
N N
3 5 7
2 4 6 8
1 3 5 7
L2 L3
208 209 210
0
230
400
-T2
400 / 230 V
400 VA
63 64 73 74
0
RM32 2P
1 A aM
RM32 2P
1 A aM
230
400
-T1
400 / 230 V
400 VA
RM1 RM2
2 A aM
2 A aM
Load
Source I Source II
ATyS t M
SI/SII availability
Inputs
Common
Inhibition
Pos. 0
order
Priority:
SI/SII
not used