Johnson Controls Penn System 450 Series Technical Bulletin page 75

Term
x
dSP
EC Motor
x
EP
Expansion Modules
Definition
In the Differential Setpoint Selection (dSP
Setup screens, select the target differential value that analog output
number x is driving the controlled loop towards. The dSP value, along
with Differential End Point (dEP) establishes the output's proportional
control band. The dSP screen appears in the Analog Output Setup screens
(only on standard System 450 control systems) after you select the
Differential Sensor (Sn-d) for the output reference. See Differential
Control on page 25 for more information.
Brushless, low-radio-frequency emitting motors, available in variable-
speed (full-range modulating) motor models, multiple-speed (selectable
fixed-speeds) motor models, and models capable of being set up as either
variable or multiple speed motors. Electronically Commutated (EC)
motors are quiet, clean, energy-efficient motors that operate efficiently at
low speeds. PENN by Johnson Control EC motors provide a wide range
of models for both indoor and outdoor HVAC/R applications. The System
450 control module with hybrid analog output (C450DPW-100) is
designed to enhance and optimized EC motor operation at very low
speeds. See Sensor Failure Mode on page 26, Hybrid Analog and High
Input Signal Selection Control System Example on page 32, and Setting up
a Pulse Region Hybrid Analog Output on page 55 for more information.
In the End Point Selection (EP
screens, select the condition value that analog output number x is driving
the control loop away from and towards the Setpoint (SP) value. The EP
and SP values define the proportional band that the analog output is
intended to control the condition within. See Direct and Reverse Control
Actions for Analog Outputs on page 20 for more information.
Provide additional relay or analog outputs to your control system.
Expansion module models are available with one or two relay outputs, and
one or two analog outputs. All of the outputs in a control system, including
the Expansion module outputs are set up in the control module UI.
System 450 control systems can control up to 10 outputs, which can be any
combination of relay or analog outputs. See Expansion Modules, Module
Assemblies, and Outputs on page 13 and Repair and Ordering Information
on page 62 for more information.
x
) screen in the Analog Output
x
) screen in the Analog Output Setup
75