Yokogawa EJX115A - Manual (Page 30)

<5. Parameter Setting>
5-10
IM 01C25T04-01EN
5.4 Output Signal Setup
5.4.1 Fail Safe Mode
Fail Safe Mode defines the Output Value and
Status (Quality) when status of input signal to AI
function block or Totalizer function block is BAD.
This function is valid only when Actual Mode of
AI function block or Totalizer function block is in
“AUTO”
• Procedure to call up the display
(AI function block)
DTM Output → Analog Input (1-3) → Fail Safe
Mode
EDD Output → Function Block (1-3) – Analog
Input → Fail Safe Mode → Fail Safe
Mode
• Procedure to call up the display
(Totalizer function block)
DTM Output → Totalizer → Fail Safe Mode
EDD Output → Function Block 4 – Totalizer →
Fail Safe Mode
5.4.2 Channel
Channel is the parameter to select the signal which
is calculated in SENSOR Transducer Block. Target
Mode of each Function Block need to be changed
to Out of Service (O/S).
DTM Output → Analog Input (1-3), Totalizer →
Target Mode
EDD Output → Function Block (1-3) – Analog
Input, Function Block 4 - Totalizer →
Target Mode
• Procedure to call up the display
DTM Output → Analog Input (1-3),
Totalizer → Channel →
EDD Output → Function Block (1-3)
– Analog Input, Function Block 4 -
Totalizer → Channel →
→ Pressure Value Row pressure value before
scaling
→ Primary Value Differential pressure value
→ Calculated Value Calculated value
→ Static Pressure
(H)
Static pressure value of high
pressure side
→ Static Pressure
(L)
Static pressure value of low
pressure side
→ Capsule
Temperature
Capsule temperature value
→ Amplifier
Temperature
Amplifier temperature value
5.4.3 Totalizer
This section shows procedure to set Signal Totalizer
function. Refer to subsection 5.4.2 for Channel
setting of Totalizer Function Block. Follow below
procedure to set signal totalizer function.
<1> Set Totalizer Value Set
• Procedure to call up the display
DTM Output → Totalizer → Totalizer
Value Set →
EDD Output → Function Block 4 –
Totalizer → Totalizer Value →
→ Totalize Normal operation of the totalizer
→ Reset Assign value 0 to totalizer
→ Preset Assign value of present value to
totalizer
<2> Set Mode
• Procedure to call up the display
DTM Output → Totalizer → Mode →
EDD Output → Function Block 4 –
Totalizer → Mode →
→ Pos. and neg.
value
True arithmetic integration of the
incoming rate values
→ Positive value
only
Totalization of positive incoming
rate value only
→ Negative value
only
Totalization of negative incoming
rate value only
→ Hold Count Totalization stopped