The back-indication signals may be provided:
•
Over dry contact relays;
•
Over polarized contacts (positive or negative).
Table 47: Connect P1 wires, per power supply type
Back indication
External power supply (A)
Internal power supply (polarized
contacts positive) (B)
Internal power supply (polarized
contacts negative) (C)
Remarks
Remove strap W6, Max. 110 V DC,
polarity is not important
Remove strap W6
Install strap W6
9.4.6 Control signals
The control signals feed relay coils. An RC circuit protects the relay coils for transient over- voltage.
Table 48: Multiwire options
Multiwire
48 VDC remote control
24 VDC remote control
Minimum voltage
40 VDC
21.6 VDC
Maximum voltage
65 VDC
35 VDC
Current consumption
Approximately 9 mA at 48 VDC
Approximately 16 mA at 24 VDC
The multiwire back-indication signals are provided over dry contact relays. The maximum contact load is:
•
AC - 110 V -0.5 A - 60 VA;
•
DC - 110 V -0.5 A - 30 W.
9.4.7 Multiwire default settings
This section shows the default multiwire settings. These settings apply to LMC software version 1.21.
Back-indication signals
UM-4019_AM02-620e, Rev. 3.0, 2020/05/12
87
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