AutomationDirect DL105, User Manual

Page: 42 / 350

Installation,
Wiring,
and
Specifications
2--11
Installation, Wiring, and Specifications
DL105 PLC User Manual, 3rd Edition
Wiring Guidelines
The diagram shows various possible
external power connections for DL105
Micro PLCs. The terminals can accept up
to 14 AWG wire. You may be able to use
larger wiring depending on the wire type,
but 14 AWG is the recommended size.
NOTE:
You can connect either 115 VAC,
220 VAC, or 125 VDC to AC-powered
versions of the DL105. Special wiring or
jumpers are not required as with some of
the other Direct LOGIC products.
110/220 VAC Power Input
94 -- 240 VAC
125 VDC Power Input
100 -- 240 VDC
12/24 VDC Power Input
L N G -- G
10 -- 30 VDC
+
-- G
+
WARNING: Once the power wiring is connected, secure the terminal block
cover in the closed position. When the cover is open there is a risk of electrical
shock if you accidentally touch the connection terminals or power wiring.
There are no internal fuses for the input power circuits, so external circuit protection
is needed to ensure the safety of service personnel and the safe operation of the
equipment itself. To meet UL/CSA specifications, the input power must be fused.
Depending on the type of input power being used, follow these fuse protection
recommendations:
208/240 VAC Operation
When operating the unit from 208/240 VAC, whether the voltage source is a
step-down transformer or from two phases, fuse both the line (L) and neutral (N)
leads. The recommended fuse size is 0.375A (for example, a Littlefuse 312.375 or
equivalent).
110/125 VAC Operation
When operating the unit from 110/125 VAC, it is only necessary to fuse the line (L)
lead; it is not necessary to fuse the neutral (N) lead. The recommended fuse size is
0.5A (for example, a Littlefuse 312.500 or equivalent).
Power Input Wiring
Fuse Protection
for Input Power