YASKAWA E7B T Series User manual

E7B Drive / Bypass System with
TouchPad Control Panel (option T or Y)
Control Wiring and
Start-up Procedure
Model: E7B_ _ _T and E7B_ _ _Y Document Number: IG.E7B.02

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 1 of 46
Introduction
The E7B 3 Contactor Bypass unit with the (T) option (E7B_ _ _T) is for single motor operation with Hand/
Off/Auto touchpad control and an LED Drive keypad display.
The E7B 3 Contactor Bypass unit with the (Y) option (E7B_ _ _Y) is for single motor operation with Hand/
Off/Auto touchpad control and an LCD multi line keypad display.
Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 2 of 46
Control Wiring
Bypass Field Control Wire Landing
The Bypass field control wiring is terminated on the control PCB A2, Terminal blocks TB1 through TB5. The termi-
nal designations are labeled on the enclosure, adjacent to PCB A2 (see Figure 1.1).
Fig 1.1 TB1 Control Terminal Locations, All Models

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 3 of 46
Annunciation Contacts
Contacts for customer use are provided and wired to TB1 and TB2 as follows for use as annunciators of Bypass unit
operation. All are 5 amp at 120 VAC contacts.
Programmable Output Relays 1, 2 and 3 may be re-programmed via DIP switches S2 and S3 on the Bypass Control
PCB A2. These relays provide form C “dry contacts” for customer use in annunciation to Building Automation Sys-
tems or general duty in other control logic circuits. Each contact is rated for 5 amps at 120 VAC.
The additional programmable output relay functions are described in the table below:
See Table 1.3 for DIP switch positions required to achieve these functions.
* Active = Relay condition during function
Table 1.1 Output Relays - Factory Defaults
Function Name (E7L-00) Terminal Block Terminals Type
Motor Run Motor Run * TB1 10-11 Form A
Hand Mode Relay 1 @ TB1 12-13-14 Form C
Auto Mode Relay 2 @ TB2 1-2-3 Form C
System Fault Relay 3 @ TB2 4-5-6 Form C
* = Dedicated
@ = Programmable
Table 1.2 Programmable Output Relay Functions
Function Description Factory Default
Bypass Run Annunciates running in Bypass mode No
Damper Actuator Intended to close a contact in a damper actuator circuit
whenever the motor is running (operation similar to the
dedicated “Motor Run” relay) No
Auto Transfer Annunciates automatic transfer to Bypass operation due to a
Drive fault No
Drive Run Annunciates running in Drive mode No
Serial Com Run Annunciates that the run command is coming from serial
communications No
Hand Mode Annunciates that the Drive or Bypass is being operated in
Hand (local) mode Relay 1
Auto Mode Annunciates that the Drive or Bypass is being operated in
Auto (remote) mode Relay 2
System Fault Annunciates that a Drive, motor overload or control circuit
fault has occurred Relay 3
Table 1.3 DIP Switch Settings for Output Relay Functions
No. Function Programmable
Relay 1 Programmable Relay 2 Programmable Relay 3 Active* Function Description
S2(6) S2(5) S2(4) S3(3) S3(2) S3(1) S3(6) S3(5) S3(4)
1Bypass Run OFF OFF OFF OFF OFF OFF OFF OFF OFF ENERGIZED Running in Bypass mode
2Damper Coil OFF OFF ON OFF OFF ON OFF OFF ON ENERGIZED Damper actuator activation
3Auto Transfer OFF ON OFF OFF ON OFF OFF ON OFF ENERGIZED Auto-Transfer is active
4Drive Run OFF ON ON OFF ON ON OFF ON ON ENERGIZED Drive is in the Run mode
5Serial Com.
Run ON OFF OFF ON OFF OFF ON OFF OFF ENERGIZED Serial Comm. Run command
6Hand Mode ON OFF ON ON OFF ON ON OFF ON ENERGIZED Manual mode operation
7Auto Mode ON ON OFF ON ON OFF ON ON OFF ENERGIZED Auto mode operation
8System Fault ON ON ON ON ON ON ON ON ON DEENERGIZED Drive, motor or control fault
Factory Settings ON OFF ON ON ON OFF ON ON ON

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 4 of 46
Building Automation system Run/Stop circuit:
A control terminal block position (TB1, terminals 2 and 9) is provided to connect the Normally Open (NO) Run/Stop
contact from a BAS or other remote controller for auto mode control.
There must be continuity between these terminals in order for the motor to run, in auto mode.
Safety Interlock Circuit:
A control terminal block position (TB1, terminals 1 and 9) is provided to connect the series circuit of Normally
Closed (NC) safety devices such as: freeze up thermostats, smoke/fire sensors, high pressure limits, temperature lim-
its or vibration detectors.
On power up the E7B_ _ _T or E7B_ _ _Y will display a red “Safety Open” LED in the “System Status” area of the
front control panel if a normally closed “Safety Circuit” has not been installed between TB1-1 and TB1-9 on PCB
A2. This condition will prevent Drive or Bypass operation.
1 of 3 items needs to be done before the motor can be started:
1) Install a NC “Safety Circuit” between TB1-1 and TB1-9 on PCB A2.
2) Install a jumper between TB1-1 and TB1-9 on PCB A2. This method should be used if a “Safety Circuit”
will be added later in the installation.
3) De-activate these terminals by moving DIP switch S2-7 to the ON position (toward the enclosure door). This
solution is only suggested if a “Safety Circuit” will never be applied to the drive system.
Building Automation System Interlock Circuit (Drive and Bypass enable
input):
A control terminal block position (TB1, terminals 3 and 9) is provided to connect Normally Open (NO) enabling con-
tacts such as: damper end switches or occupied cycle timers.
When a Run command is received in HAND or AUTO mode, the E7B_ _ _T or E7B_ _ _Y 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.
1 of 3 items needs to be done before the motor can be started:
1) Install a “BAS Interlock Circuit” between TB1-3 and TB1-9 on PCB A2.
2) Install a jumper between TB1-3 and TB1-9 on PCB A2. This method should be used if a “BAS Interlock
Circuit” will be added later in the installation.
3) De-activate these terminals by moving DIP switch S2-8 to the ON position (toward the enclosure door). This
solution is only suggested if a “Safety Circuit” will never be applied to the drive system.

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 5 of 46
Analog Inputs
The Drive has two analog input terminals for use as auto mode speed command (terminals A1 & A2) and feedback
(terminal A2) input.
Control Circuit Analog Input Terminals on PCB A2
All control inputs are landed on TB1 through TB5 on PCB A2.
TB3-3 is an analog input terminal and may be connected to either Drive terminal A1 or Drive Terminal A2, to maxi-
mize input flexibility, using DIP switches S1-3 and S1-4. The factory default is TB3-3 connected to Drive terminal
A2. With this connection, the input signal level can be either 0 to 10 VDC or 4 to 20 mA. The signal level selection is
controlled by DIP switch S1-2 and Drive parameter H3-08.
TB5-9 is also an analog input terminal, it is always connected to Drive terminal A2.
See Table 1.5, Figure 1.2 and Schematic Diagram E7B-10 for clarification of the analog input configuration and
applications.
Analog Input PCB A2 Configuration
Fig 1.2 Analog Input PCB A2 Configuration
Table 1.4 Drive Analog Input Terminals
Terminal Signal Level
A1 0 to 10 VDC
A2 4 to 20 mA or 1 to 10 VDC
(programmable via parameter H3-08 and DIP switch S1-2)
Table 1.5 Analog Input - Auto Mode
DIP Switches Drive Drive Applications
S1-2 S1-3 S1-4 Param. Terminal Speed Feedback Diff. H3-08 Connected Command Feedback
TB3-3
Signal Level
0 to 10 VDC N/A OFF ON N/A TB3-3 to A1 XXX
4 to 20 mA ON ON OFF 2TB3-3 to A2 X X
0 to 10 VDC OFF ON OFF 0TB3-3 to A2 X X
TB5-9
Signal Level
4 to 20 mA ON N/A N/A 2 TB5-9 to A2 via 3-15
Transducer
0 to 10 VDC OFF N/A N/A 0 TB5-9 to A2 X

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 6 of 46
Analog Input (Drive Speed Control Circuit) Wiring
Keep this lead length as short as possible (50 m max.) to maintain signal quality. Insulated twisted shielded pair wire
(2 conductor # 18 ga, Belden 8760 or equivalent) is required. Do not run these wires in the same conduits as other AC
power or control wires. The shield must be connected on this end only, stub and isolate the other end. The signal
employed is 4 to 20 mA with parameter H3-08 set for “2: 4 - 20 mA”. For 0 to 10 VDC, parameter H3-08 is set for
“0: 0 - 10 VDC” and the control PCB DIP switch S1-2 must be in the OFF position.
When setting speed commands from an external speed potentiometer (and not from a Digital Operator), use shielded
twisted-pair wires and ground the shield to terminal PE, as shown in Figure 1.3. Terminal numbers and wire sizes are
shown in Table 1.11.
Fig 1.3 Analog Input Terminal Configuration

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 7 of 46
Analog Outputs
Two analog outputs are provided, both can be configured for a signal level of 0 to 10 VDC or 4 to 20 mA. The signal
level is controlled by the position of jumpers J2 and J3 on Control PCB A2 and by the values selected for Drive
parameters H4-07 and H4-08.
Configuring the Analog Outputs:
Programming the Analog Outputs:
The TB3-4 and TB5-6 analog outputs can be programmed to be proportional to any of the following Drive variables.
See the H4-0X parameters in programming manual TM.E7.02 for additional programming details.
Table 1.6 Analog Outputs
Terminals Jumper Position Drive
Analog
Output AC Common Signal Level J2 J3 Terminal * Parameter H4-07 Parameter H4-08
TB3-4 TB3-1 4-20 mA 1-2 N/A FM 2: 4-20 mA N/A
TB3-4 TB3-1 0-10 VDC 2-3 N/A FM 0: 0-10 V N/A
TB5-6 TB5-7 4-20 mA N/A 1-2 AM N/A 2: 4-20 mA
TB5-6 TB5-7 0-10 VDC N/A 2-3 AM N/A 0: 0-10 V
* = For Drive programming reference
Table 1.7 Analog Output Proportional Variables
Setting Description Setting Description
1Frequency Ref 20 SFS Output*
2Output Freq 24 PI Feedback
3Output Current 31 Not Used
6Output Voltage 36 PI Input
7DC Bus Voltage 37 PI Output
8Output kWatts 38 PI Setpoint
15 Term A1 Level 51 Auto Mode Fref
16 Term A2 Level 52 Hand Mode Fref
18 Mot SEC Current 53 PI Feedback 2
* SFS is the internal soft starter signal. This signal is generated from the reference and often it passes through the accel/ decel functions.

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 8 of 46
Serial Communications:
Terminals are provided for “full duplex” or “half duplex” connections to the Drive for RS422/RS485 serial communi-
cation.
For “half duplex” operation via Metasys N2 protocol (enabled with option J), APOGEE FLN protocol (enabled with
option U) or Modbus protocol (enabled with option V) field configuration of these terminals is required.
When no cost options J, U or V are ordered:
• Jumpers are provided for field installation on terminals TB4-1 to TB4-3 and TB4-2 to TB4-4.
• The E7 Drive is programmed to enable the appropriate protocol (parameter H5-08), baud rate (parameter
H5-02), RTS control (parameter H5-07) and error detection time (parameter H5-09).
Option L (LonWorks) does not require jumpers and (with the exception of H5-07) employs the same parameter set-
tings as Modbus.
For co-ordination with other E7 Technical Manuals, the table below provides the equivalency between E7B_ _ _T or
E7B_ _ _Y Control PCB A2 terminal designations and E7 Drive terminal designations used in TM.E7.01, TM.E7.02,
TM.E7.21, TM.E7.22 and TM.E7B.01.
Table 1.8 Factory Programming for Serial Communication
Parameter (Function) Option J U V L
H5-02 (Baud Rate) 3: 9600 Baud 2: 4800 Baud 3: 9600 Baud 3: 9600 Baud
H5-07 (RTS Control) 1: Enabled 1: Enabled 1: Enabled 0: Disabled
H5-08 (Protocol) 1: N2 (Metasys) 2: FLN
(APOGEE) 0: Modbus 0: Modbus
H5-09 (Error Time) 10 10 10 10
Table 1.9 Serial Communications Terminal Designation Cross Reference
E7L RS485 Terminal E7 Drive RS485 Terminal
TB4-1 S+
TB4-2 S-
TB4-3 R+
TB4-4 R-

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 9 of 46
Terminating Resistor
The terminating resistance must be turned ON only if the Drive is at the very end of the Serial Communication chain.
Set the terminating resistance by turning ON DIP switch S1-1.
Fig 1.4 Terminating Resistor
Fig 1.5 RS-485 Communication Connection
IMPORTANT 1. Separate the communication cables from the main circuit cables and control circuit wiring.
2. Use shielded cables for the communication wiring, and use proper shield clamps.
3. When using RS-485 communication, connect TB4-1 to TB4-3, and TB4-2 to TB4-4, on the control
circuit terminal board. See Fig 1.5 below.
4. Connect shield at one end only.
TB4-3 TB4-4 TB4-1 TB4-2
TB4 on Control PCB A2

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 10 of 46
Remote Transfer to Bypass
Terminal TB1-4 on the Control PCB A2 is a dedicated terminal for “Remote Transfer” to Bypass operation.
This function allows a contact closure from a BAS, between terminals TB1-4 and TB1-9, to transfer motor operation
from Drive mode to Bypass mode. This remote transfer to Bypass function overrides the Drive Select manual button.
An open contact causes operation in Drive mode and a closed contact results in Bypass mode.
Smoke Purge Operation
Terminal TB1-5 on the Control PCB A2 is a dedicated terminal for “Smoke Purge” operation.
This function allows a contact closure between terminals TB1-5 and TB1-9 to transfer motor operation to Bypass for
a maximum capacity smoke control function. When in smoke purge mode, during emergency fire/smoke situations,
the motor overloads and safety interlock circuit are overridden to shift the priority to protecting people rather than
equipment. [Note: Smoke purge overrides all other control inputs and selector buttons. Smoke purge operation can
only be terminated by opening the contact closure at terminal TB1-5 or by opening the circuit breaker (CB1 on sche-
matic E7B-10).]
Multi-Function Digital Inputs
The Bypass 120 VAC logic circuit is interconnected with the Drive multi-function digital input terminals to allow a
single customer interface to control both Drive and Bypass circuits.
As a result, only Drive digital input terminals S6 and S7 are available for other uses. Drive Terminals S6, S7 and SN
have been brought out to TB5-5, TB5-4 and TB5-2 respectively. See Appendix A and Chapter 5 in TM.E7B.01,
parameter H1-04 and H1-05 for programming instructions.

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 11 of 46
DIP Switch Programmable Functions Summary
Auto Transfer to Bypass
When enabled (DIP switch S2-1 ON), the Bypass unit will automatically switch into Bypass mode on a Drive fault.
After clearing the Drive fault condition, the function resets by moving the disconnect switch to the OFF position and
waiting for the keypad to go blank. CAUTION: Before selecting this function in fan applications, care must be taken
to ensure that the ductwork is designed to handle the pressure resulting from full speed operation with the VAV termi-
nal unit dampers at minimum position or closed. The factory default for this function is disabled.
Power Up Mode
The Drive/Bypass electronic interface can be configured (via a DIP switch) to be in the AUTO mode or OFF when
power is applied to the unit. This function is controlled by DIP switch S2-2, ON for AUTO operation on power up.
The factory default is to power up to the OFF mode.
1
2
3
4
3
4
1
2
3
4
5
6
7
4-6
1-6
8
S1
ON OFF
IN OUT
FACTORY
SETTING
4-20MADC 0-10VDC ON
ON
OFF
YES YES
YES
YES
YES NO
INACTIVE ACTIVE
INACTIVE ACTIVE
DIP
SWITCH SETTINGS
DESCRIPTION
S2
S3
S4
POS.
SAFETY INTERLOCKS AT TB1(1)
BAS/DAMPER INTERLOCKS AT TB1(3)
TB3(3) CONNECTED TO DRIVE ANALOG INPUT 2 (A2)
TB3(3) CONNECTED TO DRIVE ANALOG INPUT 1 (A1)
DRIVE ANALOG INPUT 2 (A2) SIGNAL (H3-08="0", FOR 0-10VDC)
1
2AUTO TRANSFER TO BYPASS UPON A DRIVE FAULT OFFAUTO OFF
OFF
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
INACTIVE
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
INACTIVE
POWER UP IN THE "OFF" OR "AUTO" MODE
3 POWER UP IN THE MAINTENANCE MODE
SEE TABLE 2.6
SEE TABLE 2.6
RESERVED FOR FUTURE EXPANSION MUST BE AT FACTORY SETTING
SPEED COMMAND FROM DRIVE TERMINAL A2, WITH SERIAL COMM.
RESERVED FOR FUTURE EXPANSION MUST BE AT FACTORY SETTING
RESERVED FOR FUTURE EXPANSION MUST BE AT FACTORY SETTING
RESERVED FOR FUTURE EXPANSION MUST BE AT FACTORY SETTING
RESERVED FOR FUTURE EXPANSION MUST BE AT FACTORY SETTING
SERIAL COMMUNICATIONS TERMINATING RESISTANCE
SEE TABLE 5.2
SEE TABLE 5.2
TABLE 1.10 DIP Switch Functions

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 12 of 46
Bypass Controller PCB
Fig 1.6 Bypass Control Circuit Inputs and Outputs
Customer provided contact closure inputs must have a minimum rating of 5 mA at 120 VAC.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
4
3
1
2
4
2
3
1
AC
+V
FM
+
-
SHIELD
ISOLATED
4-20MADC
OR
0-10VDC
AUTO MODE
SPEED
REFERENCE
INPUT
6
9
8
7
5
4
3
2
1
REMOTE TRANSFER
SMOKE PURGE
SPARE 6
9
8
7
5
4
3
2
1
TB1
TB2
TB3
TB1TB1
MIN. RATING
OF CONTACTS:
MIN. RATING
OF CONTACTS:
CN103
A1/A2 FACTORY SETTING IS4-20mA CONNECTED TO
DRIVE TERMINAL A2 (ASSELECTED BY DIP SWITCH
S1(2), (3) & (4))
OR
INTERNAL SUPPLY
120 VAC LOGIC CUSTOMER SUPPLIED 120 VAC LOGIC
A2
PROGRAMMABLE
RELAY #1
MOTOR
RUN
5MA, 120VAC
5MA, 120VAC
120VAC
+/- 15%,
25MA MIN.,
4MA MAX.
LEAKAGE
CURRENT
120VAC COMMON
7
8
9
6
5
4
3
2
1
PE
USER SUPPLY COMMON
ELECTRONIC BYPASS
CONTROL PCB
S+
S-
R+
R-
1
2
3
J1 J1
3
2
1
DRIVE
TERMINAL
S7 INPUT
DRIVE
TERMINAL
S6 INPUT
AC
AM
+V
(+15VDC, 20mA)
A2
4-20MADC OR 0-10VDC
(ASSELECTED BY
DIP SW. S1(2).
FACTORY SETTING IS
4-20MADC)
TB5
TB4 DRIVE AM MONITOR OUPUT
4-20MADC OR 0-10VDC
(ASSELECTED BY JUMPER J3.
FACTORY SETTING IS4-20MADC)
PROGRAMMABLE
RELAY #2
PROGRAMMABLE
RELAY #3
(FACTORY SETTING
ISSYSTEM FAULT)
(FACTORY SETTING)
ELECTRONIC BYPASS
CONTROL PCB ELECTRONIC BYPASS CONTROL PCB
SAFETY INTERLOCKS
(+15VDC,
20mA)
3
2
4-20
MADC
1
3
2
0-10
VDC
1
J2 J3
(ASSELECTED BY
DIP SWITCH S1 (2, 3, & 4).
SEE SH. 2, TABLE 4.
FACTORY SETTING
IS4-20MADC,
CONNECTED TO DRIVE
ANALOG INPUT 2 (A2).)
BAS/DAMPER INTERLOCK
AUTO MODE RUN/STOP
(FACTORY SETTING
ISHAND MODE)
(FACTORY SETTING
ISAUTO MODE)
FACTORY SETTINGS
TB3(4)
FM AM
TB5(6)
DRIVE
TERMINAL
SN
DRIVE
TERMINAL
SP
NOT
USED
SEE THE
APPROPRIATE
TECHNICAL
MANUAL FOR
NETWORK
CONNECTIONS
OPTIONS
J, U OR V
SERIAL
COMMUNICATIONS
METASYS(J),
APOGEE (U) OR,
RS422/485
MODBUS(V)
DRIVE FM MONITOR OUTPUT
4-20MADC OR 0-10VDC
(ASSELECTED BY JUMPER J2.
FACTORY SETTING IS4-20MADC)

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 13 of 46
Wiring Checks
After all wiring is completed, perform the following checks:
1. Is all wiring correct?
2. Have all wire clippings, screws or other foreign material been removed from the Drive and Bypass enclosure?
3. Are all terminal screws tight?
Control Circuit Wiring Precautions
Observe the following precautions when wiring control circuits:
1. Separate control wiring from power/motor wiring and other high-power lines.
2. Separate wiring for control circuit terminals for digital outputs from wiring to other control circuit terminals.
3. If using an optional external power supply, it should be a UL Listed Class 2 power supply source.
4. Use twisted-pair or shielded twisted-pair cables for control circuits to prevent operating faults. Prepare cable
ends as shown in Figure 1.7.
5. Connect the shield wire to terminal PE.
6. Insulate the shield with tape to prevent contact with other signal lines and equipment.
Fig 1.7 Preparing the Termination of Shielded Twisted-Pair Cables
Table 1.11 Terminal Numbers and Wire Sizes (Same for all Bypass Units)
Terminals Terminal
Screws
Tightening
Torque
lb.-in.
(N•m)
Possible
Wire Sizes
AWG
(mm2)
Recommended
Wire Size
AWG
(mm2)
Wire Type
TB1-1 to 14
TB2-1 to 6
TB3-1 to 4
TB4-1 to 4
TB5-1 to 9
Phoenix
type *34.2 to 5.3
(0.5 to 0.6)
Stranded
wire:
26 to 16
(0.14 to 1.5)
18
(0.75) • Shielded, twisted-pair wire*1
• Shielded, polyethylene-covered,
vinyl sheath cable
PE M3.5 7.0 to 8.8
(0.8 to 1.0) 20 to 14
(0.5 to 2*2)12
(1.25)
*1.Use shielded twisted-pair cables to input an external speed command.
*2.We recommend using straight solderless terminals on digital inputs to simplify wiring and improve reliability.
*3.We recommend using a thin-slot screwdriver with a 3.5 mm blade width.
Shield sheath Insulation
Connect to shield sheath
terminal PE on PCB A2 Insulate with tape
Do not connect here.

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 14 of 46
Bypass Control Circuit Terminal Functions
The functions of the control circuit terminals are shown in Table 1.12.
Table 1.12 Bypass Control Circuit Terminals
Type No. Signal Name Function Signal Level
Digital
input
signals
TB1-1 NC Safety Circuit Fault when OPEN
Dry
Contacts
TB1-9
TB1-2 Auto Mode run/stop command Run when CLOSED; stopped when OPEN.
TB1-9
TB1-3 BAS Interlock Enable Drive when Closed
TB1-9
TB1-4 Remote Transfer Transfer to Bypass when Closed
TB1-9
TB1-5 Smoke Purge Transfer to Bypass when Closed
TB1-9
TB5-4 Drive Input Terminal S7 Programmable Input
TB5-2
TB5-5 Drive Input Terminal S6 Programmable Input
TB5-2
Analog
input
signals
TB3-2 +15 VDC power supply +15 VDC power supply for analog Transmitters +15 VDC
(Max. current: 20 mA)
TB3-3
Analog input or Speed Com-
mand when connected to Drive
Terminal A2 by DIP switches
S1-3 and S1-4
4 to 20 mA/100% or 0 to +10
VDC/100%
(H3-08 and DIP switch S1-2)
Function set by
H3-09. 4 to 20 mA(250Ω) 0 to +10 V(20 kΩ)
Analog Input or Speed Com-
mand when connected to Drive
Terminal A1 by DIP switches
S1-3 and S1-4
0 to +10 VDC/100% 0 to +10 V(20 kΩ)
TB5-9 Multi-function analog input connected to Drive terminal
A2
4 to 20 mA/100% or 0 to +10
VDC/100%
(H3-08 and DIP switch S1-2)
Function set by
H3-09. 4 to 20 mA(250Ω)
0 to +10 V(20 kΩ)
TB3-1 Analog input common – –
TB5-7
PE Shield wire, optional ground
line connection point – –
Digital
output
signals
TB1-10 Motor Run CLOSED During Motor Operation
Dry contacts
Contact capacity:
5 A max. at 250 VAC
5 A max. at 120 VAC
TB1-11
TB1-12 Programmable Relay 1 Form C Relay Function Selections:
1. Bypass Run
2. Damper Actuator
3. Auto Transfer
4. Drive Run
5. Serial Com. Run
6. Hand Mode
7. Auto Mode
8. System Fault
See Table 2.6 for DIP Switch programming
TB1-13
TB1-14
TB2-1 Programmable Relay 2TB2-2
TB2-3
TB2-4 Programmable Relay 3
TB2-5
TB2-6
Analog
output
signals
TB3-4 Multi-function analog output
(Drive terminal FM) Frequency Output
0 to +10 VDC/100% frequency
Multi-function
analog monitor 1
Function set by
H4-01
0 to +10 VDC or 4-20
mA set by Jumper J2
and H4-07
TB3-1 Analog output common –
TB5-7 0 to +10 VDC or 4-20
mA set by Jumper J3
and H4-08
TB5-6 Multi-function analog output
(Drive terminal AM)
Current Monitor
0 to +10 VAC/100%
Drive's rated current
Multi-function
analog monitor 2
Function set by
H4-04

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 15 of 46
RS-485/
422
TB4-1 Communication input For 2-wire RS-485, short TB4-3 to TB4-1
and TB4-4 to TB4-2.
Differential input,
optical isolation
TB4-2
TB4-3 Communication output Differential input,
optical isolation
TB4-4
PE Signal common - -
Table 1.12 Bypass Control Circuit Terminals (Continued)
Type No. Signal Name Function Signal Level

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 16 of 46
Electrical Overview
Fig 1.8 E7B_ _ _T or E7B_ _ _Y Electronic Control Interconnection of Components
Ribbon
Cable
For
signals
between
drive and
PCB-A2
Cat 5 Cable
/w RJ 45
connectors
Electronic
Bypass Control
(PCB-A2)
E7 Drive
Control
Board
Control
Panel
Drive
Keypad
Membrane
Keypad for
H/O/A
Control
Panel Components
•Contactors
•Control Xfmr
•Motor
O
L
Customer
Control
Terminal
Blocks
Ribbon
cable for
LEDs and
switches
for H/O/A
control

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 17 of 46
Digital Operator and Control Panel Display
The various items included on the Digital Operator Display and Control Panel are described below.
Fig 1.9A E7B_ _ _T Bypass Control Panel Component Names and Functions
The front control panel has a digital alpha/numeric display and keypad, in the upper portion, for Drive operation and
programming. The row of LEDs above the alpha/numeric display indicate Drive operational status. See Table 1.14
for an explanation. The row of LEDs below the alpha/numeric display indicate the Drive menu that is presently
active.
The lower portion of the front control panel displays the operating mode status via LEDs and controls the HAND/
OFF/AUTO functions for both the Drive and Bypass. The general rule for LED colors, in the lower portion of the
control panel, is:
Green = Normal Status
Amber = Abnormal Status
Red = Fault Status
RUN & STOP Indicators
Drive Keypad Operator
Drive Digital
Operator/Keypad
Status Indicating LEDs
H/O/A Control Keypad Drive/Bypass and
HAND/OFF/AUTO
Selector Keys
{
{
}
}
}
Drive Operational Status
Alpha-Numeric
Menu Indicating
LED Digital Display
LEDs

Yaskawa Electric America, Inc.
Installation Guide IG.E7B.02 Rev: 04-11
Date: 11-1-04 Page 18 of 46
Digital Operator and Control Panel Display
The various items included on the Digital Operator Display and Control Panel are described below.
Fig 1.9B E7B_ _ _Y Bypass Control Panel Component Names and Functions
The front control panel has a digital alpha/numeric display and keypad, in the upper portion, for Drive operation and
programming. The row of LEDs above the alpha/numeric display indicate Drive operational status. See Table 1.14
for an explanation.
The lower portion of the front control panel displays the operating mode status via LEDs and controls the HAND/
OFF/AUTO functions for both the Drive and Bypass. The general rule for LED colors, in the lower portion of the
control panel, is:
Green = Normal Status
Amber = Abnormal Status
Red = Fault Status
RUN & STOP Indicators
Drive Keypad Operator
Drive Digital
Operator/Keypad
Status Indicating LEDs
H/O/A Control Keypad Drive/Bypass and
HAND/OFF/AUTO
Selector Keys
{
{
}
}
}
Drive Operational Status
Alpha-Numeric
LCD Digital Display