Mitsubishi Electric FX3U-128ASL-M User Manual page 44

FX -128ASL-M User's Manual
3U
b) Constants related to the isolated slave module (Izdin, Izdo)
In the isolated slave module, only the current required for the internal control circuit is supplied with
the transmission cables (DP, DN), whereas that for the connected load is supplied from the 24 V DC
external power supply.
Izdin(A) = Internal current consumption of the isolated input module
Izdo(A) = Internal current consumption of the isolated output module
24V
24V
24 V DC
external
power supply
Caution
• In isolated type slave modules, the current consumption of the connected load is not subject to the
current restriction condition for the AnyWireASLINK system.
• For the current consumption of isolated slave modules, refer to the manual for the slave module
used.
c) Maximum transmission cable supply current
For the maximum transmission cable supply current, refer to Section 2.2.
4) Description of the conditions [2] and [3]
a) Vm: Supply voltage for the 128ASL-M
Voltage
Rated voltage : 24 V DC
b) ∆V(V): Cable-to-cable voltage drop
∆V(V) = Transmission cable supply current I(A) × Cable resistance R(Ω)
Cable resistance R(Ω) = Cable length (m) × Conductor resistance (Ω/m) × 2
Cross-sectional area 1.25 mm
Cross-sectional area 0.75 mm
38
DP
128ASL-M
0V DP DN
0V
: 24 V DC -10 to +15% (21.6 to 27.6 V DC), ripple voltage 0.5 Vp-p or lower
2
: Conductor resistance 0.015 Ω/m
2
: Conductor resistance 0.025 Ω/m
5.5 Power supply details to the AnyWireASLINK system
Isolated slave module
Control circuit
Load driving circuit (photocoupler)
DN 24VL 0VL
24V 0V
24 V DC
external
power supply
5 Wiring, Power-ON/OFF Timing
0 1 n
Connected load