Publication 2711P-UM001D-EN-P - September 2005
3-4 Connect Power
DC Power Connections
Terminals that operate on 24V dc power are EN 61131-2 Equipment
Class II devices. These terminals have an integrated, non-isolated,
24V dc power supply. The table lists the electrical input ratings.
The power supply is internally protected against reverse polarity of
the + and - connections. Connecting the DC positive (+) or
DC negative (-) source to the Functional Earth (FE) may damage the
terminal.
The input power terminal block on the integrated power supply is
removable and supports these wire sizes.
The non-isolated power supply does not provide galvanic isolation. A
Class 2 Safety Extra-Low Voltage (SELV) isolated power supply with a
24V dc nominal output voltage is required to power the terminal.
Power Type Terminal Input Range
DC
400 and 600 24V dc nom (18…30 V dc)
25 W max (1.0 A at 24V dc)
700-1500 24V dc nom (18…32 V dc)
70 W max (2.9 A at 24V dc)
Terminal Wire Type
Dual Wire Gauge
(1)
Single Wire Gauge
Terminal Screw Torque
400 and 600 Stranded or solid #22…#16AWG #22…#14 AWG
0.45…0.56 Nm
(4…5 in-lbs)
700-1500 logic module
Series A-D
Stranded or solid #22…#16AWG #22…#14 AWG
0.23…0.34 Nm
(2…3 in-lbs)
700-1500 logic module
Series E and later
Stranded or solid #22…#16AWG #22…#14 AWG
0.45…0.56 Nm
(4…5 in-lbs)
(1)
Two-wire maximum per terminal
ATTENTION
Use a Class 2 SELV isolated and ungrounded
power supply as input power to the terminal. This
power source provides protection so that under
nominal and single fault conditions, the voltage
between conductors and between conductors and
Functional Earth or Protective Earth does not
exceed a safe value.
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