NOTES:
1. When Forward Run and Reverse Run inputs are both closed for more than 500 ms, the Digital
Operator displays a blinking “ EF Ext Fault ” alarm code and the motor (if rotating) is decelerated
by the drive to a stop. This stop condition is not stored by the drive (on Digital Operator, red LED
at
SS TT OO PP
key does not light);
II FF OONN EE OO FF TT HHEE IINNPPUU TT SS II SS OOPPEENNEE DD,, TT HHEE MMOOTTOORR WW IILL LL
II MM MM EE DD II AA TT EE LL YY SS TT AA RR TT UU PP AA GG AA II NN ..
2. Terminals S1-S6 source +24 Vdc (8mA max.) and operate in a Low = True (ON) configuration when
connected to terminal SC.
When using relays for input to terminals S1-S6, use relays with highly reliable contacts (for very
small current) with a capacity of 30 Vdc or more and rated current of 100mA or higher. When
using transistor (open collector) input, use transistors with rated voltage of 35 Vdc or more and
rated current of 100mA or more.
3. These terminals are multi-function inputs. The indicated functions are their settings, based on a
2-Wire reset. For 3-Wire reset definitions, and other settings, see descriptions for “Multi-
Function Input Terminals”, parameters
nn 00 33 66
thru
nn 00 44 00
, in paragraph 5.19.
1-12
11..44..22 GGrroouunnddiinngg
• The drive must be solidly grounded using the main circuit ground terminal.
• If Drive is installed in a cabinet with other equipment, ground leads for all equipment should be
connected to a common low-impedance ground point within the cabinet.
• The supply neutral should be connected to the ground point within the cabinet.
• Select appropriate ground wire size from Table 1-1.
• Make all ground wires as short as practical.
• NEVER ground the drive in common with welding machines or other high power electrical
equipment.
• Where several drives are used, ground each directly to the ground point (see Figure 1-1). DO
NOT FORM A LOOP WITH THE GROUND LEADS.
• When connecting a motor to the drive’s output terminals, include a separate ground wire. Attach
ground wire solidly to motor frame and to drive’s ground terminal.
• When using armored or shielded cable for connection between drive and motor, solidly connect
armor or shield to motor frame, and to the drive’s ground terminal.
A. Grounding of Three Drives
PREFERRED NOT RECOMMENDED NOT
ACCEPTABLE
CORRECT NOT RECOMMENDED
B. Grounding of Drive Motor
Figure 1-1. Grounding
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