Section 2 — System Components Hawk 1000
2-2 Part No. 750-366
2.1 Overview
The principal components of the HAWK 1000 Boiler Control System are the Programmable Logic Controller
(PLC), Touch Screen Human Machine Interface (HMI), and the Flame Safety Control. The system also includes
24VDC power supplies and various relays and circuit breakers.
1. Base Unit
1a. L24ER Programmable Logic Controller (PLC)
1b. Embedded I/O
2. SM2 Modbus Communications Module
3. Digital Inputs
4. Digital Outputs
5. Analog Inputs (optional)
6. Burner Control
7. Power supplies
8. Circuit breakers, relays, fuses,
etc.
9. ALWCO control
The
HAWK
1000
Boiler Controller is factory pre-programmed to work with most Cleaver-Brooks firetube
and
watertube boilers, yet allows easy configuration for specific boiler applications. The Boiler Controller
progra
m
logic is password secured, ensuring tamper- proof controller operation. The Touch Screen HMI provides
user
-
friendly access to firing rate control functions, boiler diagnostics and alarm history, as well as
conn
ected
operating
parameters.
Burner
management
is handled by the proven CB780E or optional CB120E
Flame
Safety Control.
2.2 Base Unit
The Base Unit consists of the Processor (CPU) which holds the program logic and configuration for the boiler
controller and embedded I/O modules which consist of discrete inputs, discrete outputs, and analog inputs.
The program logic is password-secured at the factory.
The SM2 module handles the Modbus communications between the PLC and other devices.
Figure 2-1. Hawk 1000 Panel
1b
2
3
5
6
8
6
1
1a
7
9
4
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