21 AC Servomotors/Servo Drives 1S-series Instruction Manual
 Main circuit connector B (CNB): R88D-1SAN15H-ECT/R88D-1SAN20H-ECT/R88D-
1SAN30H-ECT/R88D-1SANF-ECT
 Motor connector (CNC): R88D-1SAN15H-ECT/R88D-1SAN20H-ECT/R88D-
1SAN30H-ECT/R88D-1SANF-ECT
 Control power supply connector (CND): R88D-1SAN15H-ECT/ R88D-1SAN20H-
ECT/ R88D-1SAN30H-ECT/ R88D-1SANF-ECT
 Terminal Block Wire Sizes
The following tables show the rated current that flows to the terminal block on the Servo Drive 
and the applicable wire sizes. Use the wire with the rated voltage of 600 V or higher for the main 
circuit.
The wire size is determined for when the heat-resistant polyvinyl chloride insulated wire (HIV) 
is used at the ambient temperature of 50°C.
 Wire Sizes for 200-VAC Input Model: R88D-1SANH-ECT
Pin No. Symbol
--- N3 (Reserved)
--- N2 
--- N1 
--- P (Reserved)
Pin No. Symbol
--- W
--- V
--- U
--- FG
Pin No. Symbol
1 +24V
20V
3 ---
Item Unit
Model (R88D-1SAN)
02H-ECT 04H-ECT 08H-ECT
Power supply capacity kVA 0.6 1.0  1.4
Main circuit power 
supply input
*1
 
Rated 
current
Arms 2.7/1.5
*2
4.6/2.7
*2
7.3/4.0
*2
Wire size ---
AWG20 to 14
 
/0.5 to 2.0 mm
2
AWG18 to 14 
/0.75 to 2.0 
mm
2
AWG16 to 14
 
/1.3 to 2.0 mm
2
Control circuit power 
supply input 
Wire size --- AWG20 to 16/0.5 to 1.5 mm
2
N3 N2 N1 P
WVUFG