Proving Signals - ABB SpiritIT Flow-X Instruction Manual

2 8 S P I R I T
Tx/Rx+
Tx/Rx-
External
Figure 6-30 2-wire RS-485 connection
For a 2-wire RS-485 connection the Tx+ and Tx-
terminals must be connected, while the Rx+ and Rx-
terminals may remain unconnected (no need for jumpers).
Rx+
Rx-
Tx+
Tx-
External
Figure 6-31 4-wire RS-485 connection
RS-485 connections need terminating resistors to
reduce voltage reflections that can cause the receiver to
misread the logic level.
I T F L O W - X I N S T R U C T I O N M A N U A L | I M / F L O W X - E N
Tx+
Tx-
Rx+
Rx+
Flow-X
Tx+
Tx-
Rx+
Rx+
Flow-X

Proving signals

The connection of the prover signals depends on the Spirit
Flow-X type and the prover set-up.
Flow-X/P
Ball prover / Compact prover
 Connect the flow pulse signals to the corresponding modules
 Connect all detector signals to all run modules
 All applicable prove signals (except the detector signals) may
be distributed over the available modules (they only have to be
connected once):
– prover pressure(s)
– prover temperature(s)
– prover densitometer
– 4-way valve commands and statuses
– prover commands and statuses
Master meter proving based on pulses
 Connect the flow pulse signals to the corresponding run
module(s) and master meter module
 Connect a digital output of the "Master Meter" module to a
digital input (prove detector in) of itself and all run modules
Master meter proving based on totals
 No connections to be made (except from the pulse inputs in
case of pulse meters)
Ball / Compact prover
Prover pressure(s)*
Prover temperature(s)*
Prover densitometer*
4-way valve commands*
Prove start command*
Plenum pressure commands*
* Connect to one of the run modules
Figure 6-32: Proving with a ball or compact prover on an X/P flow
computer.
X/P
PANEL RUN X RUN Y
IT