Delta Electronics VFD-VL manual Descriptions

Appendix B Accessories

Descriptions

1.When the power +24VDC is applied to S1 and S2 (S1 is +), the relay contacts of S3 and S4 are ON. When the power +24VDC isn’t applied to S1 and S2, the relay contacts of S3 and S4 are OFF. At the meanwhile, EMVL-ASF01 can stop the output of the AC motor drive by connecting to JP19 on the control board. It can also be used with MI8 to achieve two safety-loop protections via hardware.

2.Multifunction input MI8

(1)Please remove JP1 from the control board before using safety-loop function. At the meanwhile, the multifunction input MI8 can control the output of the AC motor drive.

(2)operation method:

MI8 is ON: the AC motor drive can output

MI8 is OFF: the AC motor drive can’t output

NOTE: Please insert JP1 into the control board when this function is disabled.

3.Safety-Relay EMVL-SAF01

(1)Please connect the power of J3 to JP19 on the control board and remove JP18 on the control board.

(2)Operation method:

When the power is applied to S1-S2: It is ON and the AC motor drive can output

When the power isn’t applied to S1-S2: it is OFF and the AC motor drive can’t output

(3) S3-S4 are the monitor contacts and user can check the safety-loop by this contact.

NOTE

„Please notice that when J3 of relay board is connected to JP19 of control board, JP18 must be removed when using EMVL-SAF01.

„Please supply the power +24VDC to S1 and S2 before the AC motor drive is powered on to drive relay.

Revision Nov. 2008, VLE1, SW V1.03 B-45