SBC PCD1 Series Manual page 135

Saia-Burgess Controls AG
4.11.8 Maximum line length for 24 V
Masse
24 VAC
MP
1 2 5
6 4/5
PCD2.T500
Important: For the NVF24-MFT2, dimensional output must be multiplied by
a factor of 2.
Determining maximum line lengths
The dimensional outputs [VA] of all MFT (2) actuators used must be added together
and the corresponding line lengths read from the diagram.
Example: 1 × NM.., 1 × AM.., 1 × AF.. and 1 × NV.. are connected to the MP-Bus.
Total dimensional output:
Total power consumption of MFT2 actuators [W]
Cable length vs dimensional output applies to AC supply
(minimum transformer voltage 21.6 VAC)
1000
100
10
1
0 20 40
The following can be read from the family of curves:
– Cable with conductor Ø 0.75 mm² gives: Cable length 25 m
– Cable with conductor Ø 1.0 mm² gives: Cable length 33 m
– Cable with conductor Ø 1.5 mm² gives: Cable length 50 m
– Cable with conductor Ø 2.5 mm² gives: Cable length 85 m
4.11.9 Maximum line length for 24 V
Masse
24 VDC
MP
6 4/5
PCD2.T500
Determining maximum line lengths
Determining maximum line lengths The power consumption values [W] of all
MFT / M FT2 actuators used must be added together and the corresponding line
lengths read from the diagram.
Example: 1 × NM.., 1 × AM.., 1 × AF.. and 1 × NV.. are connected to the MP-Bus.
Total power consumption:
Manual Manual PCD 1 / PCD 2 Series │ D ocument 26 / 737 EN22 │ 2 013-11-26
L = max. cable length [m]
1 2 5
Drive Drive
1 2
0.75 mm 1.0 mm
2
1.5 mm 2.5 mm
2
60 100 120 140
L = max. cable length [m]
1 2 5 1 2 5
Drive Drive
1 2
1.3 W + 2.5 W + 6.0 W + 3.0 W = 12.8 W
supply
AC
1 2 5
Drive
8
3 VA + 5 VA + 10 VA + 5 VA = 23 VA
2
2
160 180 [VA]
supply
DC
1 2 5
Drive
8
Communication interfaces
MP-Bus PCD2.T500
4
4-47