HA40 4-Channel Controller
HA40 Technical Manual
2-7
Unity Gain may be used at anytime to cancel incorrect calibrations 
and start again.  Unity means Offset = 0.00 and Gain = 1.00.
Figure 2-6. Cal Flow Chart
2.3 System Conguration Menus
Several items needing configuration are not specific to any channel 
but affect the entire HA40 system.  These are located in the SYSTEM 
menus group shown  in  the  dotted  line  box  in  Figure  2-7.    System 
menus are accessed through the SETUP menu shown in Figure 2-23 
by pointing to the desired item and pressing Edit.
SETUP (firmware rev)
Channel 1
Channel 2
Channel 3
Channel 4
System
Security
History
Figure 2-7. System Conguration Menu
2.3.1 Standard / Optional Relay Setup Menus
The menu shown in Figure 2-8 allows configuring of both the standard 
Relay 1 & Relay 2 motherboard relays and the six optional relays on 
the 10-0222 discrete relay option PCB.  Both standard and optional 
relays are programmed in this menu.  Select the relay to be configured 
by pointing the arrow at the top menu item and pressing Edit.  The field 
will scroll through all eight possible relays (2 standard and 6 optional).
Figure 2-8. Relay Setup Menu
•  Fault, Alarm 1,  Alarm  2, Alarm 3  menus (Figure 2-8)  offer 
additional “voting”  flexibility by  controlling  the  channel  alarm 
combinations that will trip the selected relay.  Each Votes entry 
requires the specified quantity of that alarm to be active before 
this relay activates.  As illustrated in Figure 2-24 Standard Relay 
1  activates  when  any  2  channels  have  Alarm  1  conditions, 
PLUS, any one channel has an Alarm 2 condition.  Fault Votes 
and Alarm 3 Votes values are 0 therefore Fault and Alarm 3 
conditions will not affect this relay.
•  Failsafe set for YES causes this relay to be energized when 
its voting requirements are false (no alarm condition) and de-
energized when  the  alarm  vote requirements  are  true.   The 
primary  benefit  of  failsafe  is  loss  of  power  places  the  relay 
contacts into the alarm condition.