TP-6833 2/16
36 Section 3 Three-Source Systems
6883
12
6
1
7
ATS1
ATS2
Connect Output 1 terminals
TB1-5 and TB1-6 on ATS 1 to
Input 1 terminals TB1-1 and
TB1-2 on ATS2.
Assign ATS 1 main logic board
output 1 to 3 Source System
Disable.
Assign ATS2 main logic board
input 1 to 3 Source System
Disable.
Connect one normally closed
output from ATS2 to G1 engine
start (ES) connections. Assign to
Engine Start Source N.
12
6
1
7
ATS2 TB1
on logic board
ATS1 TB1
on logic board
G1 ES
3 Source System Disable
Connect the ATS2 engine start contacts (on
the contactor or the field-connection terminal
block) to G2 engine start (ES) connections.
See Figure 3-1.
Figure 3-2
Input and Output Connections for Three-Source Systems
3.6 ATS1 and ATS2 System Setup
Use the System Setup Menu on each transfer switch to
set the following:
ATS1: Set the Source type to Util-Gen.
ATS2: Set the source type to Util-Gen-Gen. Set the
3 Src Engine Start Mode to Mode 1 or Mode 2 as
described in Section 3.2.
The transfer switch settings are summarized in
Figure 3-3.
Transfer
Switch
Source Type
3 Src Engine Start
Mode
Preferred
Source Toggle
Inputs
Outputs
ATS1
Util-Gen
Not Required
Not Required
Not Required
Three Source System
Disable
ATS2
Util-Gen-Gen
Mode 1 or Mode 2
(See Section 3.2)
Enable or Disable
See Section 3.3
Three Source System
Disable
Source N Start Signal
Figure 3-3
Transfer Switch Settings for Three-Source Systems
