4 Wiring
Varec, Inc. 43
Product Order Code: N2920-aa-2-cc-2-e-f-g-h-i
The following terminals apply to a 2920 FTT with AC power, 4 limit switches, 2 or 4 digital
inputs, and optional analog input/analog outputs. Other product options can be variable as
shown in the table below.
If two digital inputs are selected, then the analog input/output
choices are A, B, or C. If four digital inputs are selected, then all analog inputs/outputs are
available.
N2920
AT
FC
FM
2
BP
MB
MS
LJ
2
A
B
C
D
E
F
1
2
N
A
B
C
0
1
A
B
C
Digital Display and
Main Junction Box
Terminal Board Abbreviation Legend:
AI Analog Input
AOx Analog Output x
A +24V Analog +24 Volt Power
Output
B+ Power +
B- Power -
COM Common
C1 Bi-Phase Mark:
Interchangeable
MODBUS: -TX/-RX
Space
TankWay: Computer (RXD)
Interchangeable
MODBUS: +TX/+RX
Mark
TankWay: Encoder (TXD)
D I x Digital Input x
D I COM Digital Input Common
DO x Digital Output x
HART+* + Ex d HART (Non-I.S.)
HART-* - Ex d HART (Non-I.S.)
LINE Line
LSx NC Limit Switch Normally
Closed
LSx COM Limit Switch Common
NEUT Neutral
R T D x Resistance Temperature
Detector x
* See the I.S. HART Junction Box section for
I.S. HART terminals, when I.S. HART option
is selected.