Install Instructions

INSTALLATION INSTRUCTIONS
62-0261-03
E4436
T775S Series 2000 Expansion Module
PRODUCT DESCRIPTION
The T775S2008 Relay Expansion Module is a four relay
device for use with the T775L2007 and T775P2003
Series 2000 Electronic Stand-Alone Controllers.
The T775L and T775P controllers each come with four
relays and can accept up to two T775S Expansion
Modules, which can provide a total of up to 12 relays for
each controller.
The T775P and T775L controllers are the next
generation of commercial and agricultural controls
capable of remote sensing of temperature and providing
switched and/or proportional outputs to various types of
loads.
When used with the T775L2007 model, the T775S
Expansion Modules provide the capability to have up to
two PID control loops, which can be used to stage
multiple relays (up to 12 when using two T775S modules)
from two independent heat or cool setpoints. The number
of stages for each setpoint can be freely chosen, limited
only by the number of relays available.
When used with the T775P2003 model, up to 12 stages
(when using two T775S modules) with reset may be
configured with the last stage being an option for a pump
stage.
IMPORTANT
The T775S expansion module is an operating
control, not a limit or safety control. If used in
applications requiring safety or limit controls, a
separate safety or limit control device is
required.
Up to two T775S expansion modules can be used with
the T775L or T775P models.
The T775S includes a T775 Bus terminal for connection
to other T775L/P/S models.
Table 1. T775S Expansion Module Configuration.
Controller
Model Description
SPDT
Relay
Outputs Enclosure
T775S2008 4-Relay
Expansion Module
4 NEMA 1