Electromechanical Bypass (EMB2) Operation

Electromechanical Bypass (EMB2) Operation

5 Electromechanical Bypass (EMB2) Operation

5.1.1 Typical Control Connections for Common HVAC Applications

Drive Terminal

Parameter Number

Parameter Name

Value Number

Value Name

Function

 

 

 

 

 

 

27

500

Digital I/O Mode

0

PNP

External Interlock

 

 

 

 

 

 

27

501

Term 27 mode

0

Input

External Interlock

 

 

 

 

 

 

29

502

Term 29 Mode

1

Output

Auto Bypass

 

 

 

 

 

 

18

510

Term 18 digital input

8

Start

Common run/stop

 

 

 

 

 

 

19

511

Term 19 digital input

52

Run Permissive

Run Permissive

 

 

 

 

 

 

27

512

Term 27 digital input

7

External Interlock

External Interlock

 

 

 

 

 

 

29

531

Term 29 digital output

160

No Alarm

Auto Bypass

 

 

 

 

 

 

01 & 02

540 [0]

Relay 1 function

167

Start Command Active

Run Permissive

 

 

 

 

 

 

01 & 02

540 [0]

Relay 1 off delay

0.00 seconds

Off Delay

Run Permissive

Table 5.1 EMB2 Default Parameter Settings for Common HVAC Applications

If the drive is reinitialized, be sure that these settings are maintained or reset for proper bypass.

Name

Function

Drive Terminals

EMB2 X59

EMB2 X55

Remote Drive Start (with common start/stop)

Input Command

 

 

3,

4

Remote Drive Start (without common start/stop)

Input Command

13, 18

 

 

 

 

 

 

 

 

 

Motor Running on Drive

Output Status

04, 05, 06

 

 

 

 

 

 

 

 

 

Run Request (for run permissive)

Output Command

 

 

11,

12

 

 

 

 

 

 

Run Enable (for run permissive)

Input Command

 

 

1,

2

 

 

 

 

 

 

Safety Stop

Input Command

 

 

5,

6

 

 

 

 

 

 

Drive Fault

Output Status

 

5, 6, 7

 

 

 

 

 

 

 

 

Fire Mode

Input Command

 

 

7,

8

 

 

 

 

 

 

Drive Mode

Output Status

 

1, 2

 

 

 

 

 

 

 

 

Bypass Mode

Output Status

 

3, 4

 

 

 

 

 

 

 

Fire Mode

Output Status

 

 

9, 10

 

 

 

 

 

 

Table 5.2 Common Functions for Controlling Motor using Bypass and Typical Terminal Connections.

Commands enable drive functions. Status reports describe conditions, but do not enable a function.

BAS-SVX49A-EN

5-1

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Trane Vertical Bypass/Non Bypass Panel, TR200 specifications Electromechanical Bypass EMB2 Operation