YASKAWA AC Drive-E7

Electronic Bypass
Supplemental Safety Information
Supplement for E7 Series: E7L, E7N, E7B with Y or T Option

To properly use the product, read this supplement thoroughly and

retain for easy reference, inspection, and maintenance. Ensure the
end user receives this supplement.

ATTENTION!
Important safety information regarding the E7 Electronic Bypass.
Read this supplement carefully prior to installation and start-up.
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SUPPLEMENT NO. IG.E7.05
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2 IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement
 1 Supplemental Safety Information - E7 Electronic Bypass

1 Supplemental Safety Information - E7 Electronic Bypass

‹ Applicability
This document is shipped with each E7L, E7N, E7B with Y Option, and E7B with T Option to call attention to the
installer that certain wiring of the safety and interlock circuits is required. The contents of this supplement pertain to
Yaskawa drive products listed in Table 1.
Table 1 Affected Models
Yaskawa
Product Description
E7L Applicable models are Yaskawa Bypass units definedby model numbers E7L_ _ _ _.
E7N Narrow Bypass Package Applicable models are Yaskawa Bypass units definedby model numbers E7N_ _ _ _.
Applicable models are Yaskawa Bypass units definedby model numbers E7B_ _ _ _
E7B with Y Option ot T Option
with Y Option or T option installed.

NOTICE
Equipment Damage - Precautions for Setting Control Circuit Logic Inputs Jumpers
J4, J5, J6, J7, J8 and J9
Place all jumpers, J4, J5, J6, J7, J8, J9, in the same matching positions for the correct logic input voltage at PCB A2
terminal TB1. Failure to comply will result in E7 control circuit damage or in damage to connected peripheral devices.
J4, J5, J6, J7, J8, J9 jumpers are placed in factory default positions 1 & 2 for 120 Vac Control Circuit Logic Inputs.

Equipment Failure to Operate - Precautions for Safety Circuit Installation

TB1-1 to TB1-9
Install a jumper or a normally closed (N.C.) circuit at PCB A2 terminals TB1-1 to TB1-9 to allow drive or bypass
operation and to prevent a Safety Open fault at power-up. Failure to comply will prevent drive or bypass operation.

Equipment Failure to Operate - Precautions for BAS Interlock Circuit Installation

TB1-3 to TB1-9
Install a jumper or a normally closed (N.C.) circuit at PCB A2 terminals TB1-3 to TB1-9 to allow drive or bypass
operation and to prevent a Safety Open fault at power-up. Failure to comply will prevent drive or bypass operation.

IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement 3

1 Supplemental Safety Information - E7 Electronic Bypass

‹ Safety Circuit Installation

On power up, the E7 Electronic Bypass will display a red "Safety Open" LED in the System Status area of the front
control panel if a normally closed (N.C) safety circuit is not been installed between TB1-1 and TB1-9 on PCB A2. This
condition will prevent Drive or Bypass operation.
Figure 1

Figure 1 Safety Open LED Indication

„ Installing or Deactivating the Safety Circuit

One of these three actions below must be taken prior to equipment start-up to prevent the Safety Open condition.
1. Option 1: Install a N.C. Safety Circuit between TB1-1 and TB1-9 on PCB A2 according to Figure 2.
2. Option 2: Install a jumper between TB1-1 and TB1-9 on PCB A2 according to Figure 3. This method should be used if
a Safety Circuit will be added later in the installation.
3. Option 3: De-activate these terminals by moving DIP switch S2-7 to the ON position (toward the enclosure door)
according to Figure 4. This solution is only suggested if a Safety Circuit will never be applied to the drive system .
Figure 2

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Figure 2 Option1: Normally Closed (N.C.) Safety Circuit Installation

4 IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement

 1 Supplemental Safety Information - E7 Electronic Bypass
Figure 3

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Figure 3 Option 2: Safety Circuit Wire Jumper

Figure 4

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Figure 4 Option 3: Deactivating the Safety Circuit with DIP Switch S2-7

IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement 5

1 Supplemental Safety Information - E7 Electronic Bypass

‹ Damper/BAS Interlock Circuit Installation

When a Run command is received in HAND or AUTO mode, the E7 Electronic Bypass will display a red "Damper/BAS"
LED in the System Status area of the front control panel. This condition will prevent Drive or Bypass operation.
Figure 5

Figure 5 Damper BAS Interlock LED Indication

„ Installing or Deactivating the Damper/BAS Interlock Circuit

One of these three actions below must be taken prior to equipment start-up to prevent the Damper/BAS Interlock
condition.
1. Option 1: Install a normally closed (N.C.) BAS Interlock Circuit between TB1-3 and TB1-9 on PCB A2.
Refer to Figure 6.
2. Option 2: Install a jumper between TB1-3 and TB1-9 on PCB A2 according to Figure 7. This method should be
used if a BAS Interlock Circuit will be added later in the installation.
3. Option 3: De-activate terminal TB1-3 by moving DIP switch S2-8 to the ON position (toward the enclosure door).
Refer to Figure 8. This solution is only suggested if a BAS Interlock Circuit will never be applied to the drive system.
Figure 6

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Figure 6 Option 1: Normally Closed (N.C.) Damper/BAS interlock Installation

6 IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement

 1 Supplemental Safety Information - E7 Electronic Bypass
Figure 7

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Figure 7 Option 2: Damper/BAS Interlock Wire Jumper

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Figure 8 Option 3: Deactivating the Damper/BAS Interlock with DIP Switch S2-8

IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement 7

1 Supplemental Safety Information - E7 Electronic Bypass

‹ Precautions for Setting PCB A2 Control Circuit Logic Input Voltage

The Control Circuit Logic Inputs on PCB A2 TB1 can be used with either 120 Vac or 24 Vdc input voltage.
(UTC000510 only). Refer to Figure 9 for details on setting jumpers J4, J5, J6, J7, J8 and J9.
NOTICE: Damage to Equipment. Place all jumpers, J4, J5, J6, J7, J8, J9, in the same matching positions for the correct logic input
voltage at PCB A2 terminal TB1. Failure to comply will result in E7 control circuit damage or in damage to connected peripheral
devices. J4, J5, J6, J7, J8, J9 jumpers are placed in factory default positions 1 & 2 for 120 Vac Control Circuit Logic Inputs.

Table 2 Control Circuit Input Voltage Jumper Settings

PCB A2 TB1 Input Voltage level Jumpers J4, J5, J6, J7, J8, and J9, Position
120 Vac Input 1 & 2 (default)
24 Vdc Input 2&3
NOTE: All jumpers J4, J5, J6, J7, J8, and J9 must be set on the same setting, either all on Vac or all on 24 Vdc.
Figure 9

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Figure 9 Setting Control Circuit Logic Input Voltage with Jumpers J4, J5, J6, J7, J8 and J9

8 IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement

 1 Supplemental Safety Information - E7 Electronic Bypass

IG.E7.05 Yaskawa AC Drive - E7 Electronic Bypass Manual Supplement 9

YASKAWA AC Drive-E7
Electronic Bypass
Supplemental Safety Information

YASKAWA AMERICA, INC.

2121 Norman Drive South, Waukegan, IL 60085, U.S.A.
Phone: (800) YASKAWA (927-5292) or 1-847-887-7000 Fax: 1-847-887-7310
http://www.yaskawa.com

YASKAWA AMERICA, INC.

In the event that the end user of this product is to be the military and said product is to be employed in any weapons systems or the manufacture
thereof, the export will fall under the relevant regulations as stipulated in the Foreign Exchange and Foreign Trade Regulations. Therefore, be sure
to follow all procedures and submit all relevant documentation according to any and all rules, regulations and laws that may apply.
Specifications are subject to change without notice for ongoing product modifications and improvements.
© 2012 YASKAWA AMERICA, INC. All rights reserved.

SUPPLEMENT NO. IG.E7.05

Published in U.S.A. FEBRUARY 2012 12-02