AERCO Control System (ACS) - Manual (Page 135)

MC2: 04/23/13 Page 135 of 144
GF-131
AERCO Control System (ACS)
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
Installation, Operation, and Maintenance Manual
OMM-0081_0D
Table H-2: ACS Standard Holding Register Address Mapping - Continued
Modbus Data
Address
Decimal (Hex)
Menu Item Units and Range
Default/
Comments
18 (0x0012) Derivative Gain
-2.00 to 2.00
(0.00 increments)
Default = 0.15
(Value x 100)
19 (0x0013) Header Temp
Bandwidth
5 to 120°F Default = 70°F
20 (0x0014) Aux Relay Open 0 to 99% Default = 45%
21 (0x0015) Aux Relay Mode
0 or 1
0 = 100% Fire Rate
1 = 100% Fire Rate and Off
Default = 1
(100% Fire Rate & Off)
22 (0x0016) Failsafe Mode
0 or 1
0 = Shutdown
1 = Constant Setpt
Default = 0
(Shutdown)
23 (0x0017)
Fault Alarm Relay
Mode
0, 1, 2, 3
0 = All Faults,
1 = No Interlock
2 = Interlock 1
3 = Interlock 2
Default = 0
(All Faults)
24 (0x0018) Fault Alarm Clear
Method
0 or 1
0 = Automatic
1 = Manual
Default = 0
(Automatic)
25 (0x0019) Boiler Operation
Mode
0, 1 or 2
0 = Parallel
1 = Sequential
2 = Combination
Default = 1
(Sequential)
26 (0x001A) Not Applicable
27 (0x001B) (Reserved)
28 (0x001C) (Reserved)
29 (0x001D) (Reserved)
30 (0x001E) Max Power Input 50 to 100%
Default = 100%
(Fire Rate)
31 (0x001F) Sys Intlk Config
0 or 1
0 = Always Enabled
1 = Start Enabled
Default = 1
(Start Enabled)