Omron SMARTSTEP A Series User Manual page 155

System Design and Installation
3-2-3 Terminal Block Wiring
When wiring a Terminal Block, pay attention to wire sizes, grounding systems, and anti-
noise measures.
Terminal Block Names and Functions
■
Terminal Name
label
L1 Main circuit
power supply
L2
input
L3
Connection ter-
1
+
minals for DC
+ 2
Reactor for
power supply
harmonic control
Main circuit DC
−
output (negative)
L1C Control circuit
power supply
L2C
input
B1 External regener-
ation resistance
B2
connection termi-
B3
nals
U Servomotor con-
nection terminals
V
W
Frame ground
R7D-AP@H:
Single-phase 200/230 V AC (170 to 253 V), 50/60 Hz
R7D-AP@L:
Single-phase 100/115 V AC (85 to 127 V), 50/60 Hz
Note Only the R7D–AP08H (750 W) has an L3 terminal, enabling three-phase
input: Three-phase 200/230 V AC (170 to 253 V AC) 50/60 Hz
Normally short between +1 and +2.
When harmonic control is required, connect a DC Reactor between +1 and +2.
Do not connect anything to this terminal.
R7D-AP@H:
Single-phase 200/230 V AC (170 to 253 V), 50/60 Hz
R7D-AP@L:
Single-phase 100/115 V AC (85 to 127 V), 50/60 Hz
30 to 200 W: An External Regeneration Resistor cannot be connected to these
terminals.
400 W: These terminals normally do not need to be connected. If there is high
regenerative energy, connect an External Regeneration Resistor between B1
and B2.
750 W: Normally shorted between B2 and B3. If there is high regenerative
energy, remove the short bar between B2 and B3 and connect an External
Regeneration Resistor between B1 and B2.
Red These are the output terminals to the Servomotor. Be careful to wire
them correctly.
White
Blue
Green/
Yellow
This is the ground terminal. Ground to a minimum of Class D ground
(Class 3 ground: 100 Ω or less).
Function
Chapter 3
3-15