Install Option Cards; Primary/Secondary Switch (Erp48-Ft Only) - ETC Echo Relay Panel Feedthrough Installation Manual

Install Option Cards

Each option card is packaged separately. Review the graphic below for option card placement.
Contact Input
Option Card

Primary/Secondary Switch (ERP48-FT Only)

When using a combination of two option cards in an Echo Relay
Panel, you will need to position the Primary/Secondary switch
prior to startup. The Primary/Secondary switch controls which set
of relays responds to each option card.
Option Card 1 will always control positions 1-24. If the
Primary/Secondary switch is in the "Primary" position, Option
Card 2 will also control positions 1-24. If the Primary/Secondary
switch is in the "Secondary" position, Option Card 2 will control
positions 25-48. See the examples in the tables below.
Example 1: Single Card Configurations
If you are using a single option card, the following configurations are possible:
Option Card 1
0-10V (positions 1–24) -
-
-
20
Option Card 2
0-10V (positions 1–24)
0-10V (positions 25–48) Secondary
Secondary
position
Option card 1
Primary/Secondary
Switch Position
Primary/Secondary
Primary
Relay Panel Feedthrough Installation Manual
Ride Thru
Option Card
DALI Option
Card or 0-10V
Option Card
Primary
position
Option card 2