Md 248I-12-8K/L4-2R2K - Connecting The Power - Leuze electronic MD 748i Connecting And Operating Instructions

2.3.2

MD 248i-12-8K/L4-2R2K - Connecting the Power

The MD 248i-12-8K/L4-2R2K provides two redundant power inputs with screw terminals on the top and
bottom of the unit.
Note: Use either power terminal (top or bottom) but DO NOT use both to supply power to the IO-Link Master.
Signal
V-
V-
V+
V+
Power Supply In
V+
IO-Link Connectors Ports 1 - 8
C/Q
L+
Digital IO (D1 and D2 | D3 and D4)
D2, D4
L+
IO-Link Master Power
Power Supply Out
* The sum of the following must not exceed V+ maximum input current:
IO-Link Mode module power
•
Actual C/Q current for each IO-Link port and for D2 and D4 output
•
Actual US current for each IO-Link port
•
You can use this procedure to connect the IO-Link Master to a power supply.
Note: Power should be disconnected from the power supply before connecting it to the IO-Link Master.
Otherwise, your screwdriver blade can inadvertently short your terminal connections to the grounded
enclosure.
1. Insert positive and negative wires (12-24AWG) into the V+ and V- contacts.
Note: Use either power terminal (top or bottom) but DO NOT use both to supply power to the IO-Link
Master.
2. Tighten the wire-clamp screws to prevent the wires from coming loose.
3. Apply the power and verify that the following LEDs are lit indicating that you are ready to program
the IP address and then attach your IO-Link or digital I/O devices.
 PWR - green lit LED indicates the MD 248i-12-8K/L4-2R2K is receiving power.
 MS, if the LED is off, the IO-Link Master is operating as expected.
 NS, if the NS LED is off; that means that there is no PLC connected. If the LED is lit and green,
that means that a PLC is connected.
 LINK should be lit (green) to indicate a valid network connection.
 ACT blinks if there is network traffic between the IO-Link Master and the network.
 EIP 1/2 should be lit (green) indicating that the link is up if both connectors are connected.
If the LEDs indicate that you are ready to go to the next installation step:
Leuze electronic
Description
24VDC Power Supply Return
24VDC Power Supply Return
Primary +24VDC Supply
Secondary +24VDC Supply
Power Supply
4A (Maximum) *
200 mA (Maximum)
200 mA (Maximum)
200 mA (Maximum)
200 mA (Maximum)
100mA @ 24VDC (V
MD 748i / MD 248i
2 Hardware Installation
Values
)
S
12