38
39
39
Configuration of relay 1 & 2 in PReset
Parameter
Value
Description
Type
Off
No relay function
Setpoint
Relay changes state at a limit
on the span
Setpoint window
Relay changes state inside a
range of the span
Sensor error indication
Only works for sensor error
Power indication
Relay is active when power
is on
Relay units for
Relay 1 and Relay 2
% of input span
0...100% of input span
Input units
E.g. °C, mV and mA
% of output span
0...100% of output span
Output units
mA and V
Setpoint
From min. to max. of relay units
Setpoint limit
Setpiont LOW
(setpoint window only)
From min. to max. of relay units
Lower setpoint in setpoint
window
Setpoint HIGH
(setpoint window only)
From min. to max. of relay units
Higher setpoint in setpoint
window
Hysteresis
From 0.1...99.9% of relay units
Difference between setpoint
value and reset value. At set-
point window the hysteresis
is outside the window.
On-delay
0..3600 s
Time from the signal crosses
the setpoint threshold until
the relay activates. Time is
reset at setpoint crossing.
Off-delay
0..3600 s
Time from the signal crosses
the hysteresis threshold until
the relay deactivates. Time is
reset at hysteresis crossing.
Action
Increasing
Activates at increasing signal
Decreasing
Activates at decreasing signal
Contact
Normally open (N.O.)
Contact state before limit is
reached
Normally closed (N.C.)
Contact state before limit is
reached
Open inside window
Relay deactivated inside set-
point window
Closed inside window
Relay activated inside set-
point window
Sensor error
detection
Contact open
Relay deactivated
Contact closed
Relay activated
Hold
Relay state as before sensor
error occurred
Off
No relay function
Graphic depiction of relay actions Increasing / Decreasing:
Graphic depiction of relay action Window:
38
t
10
10
20
20
30
30
40
40
50
50
60
60
70
70
80
80
90
90
100
100
0
t
10
10
20
20
30
30
40
40
50
50
60
60
70
70
80
80
90
90
100
100
0
2
2
2
2
1
1
1
1
Setpoint Low = 40
Setpoint Low = 40
Setpoint High = 60
Setpoint High = 60
Hysteresis = 5
Hysteresis = 5
Hysteresis = 5
Hysteresis = 5
On
On
On
Off
Off
Off
Off
Off
Off
On
On
On
1
2
Relay action: Window (shown for increasing signal)
Relay action: Window (shown for increasing signal)
Relay action: Window (shown for decreasing signal)
Relay action: Window (shown for decreasing signal)
Contact: Closed inside window =
Contact: Open inside window =
1
2
Contact: Closed inside window =
Contact: Open inside window =
Relay units
Relay units
t
Off N.C.
On N.C.
On N.C.
10
10
20
20
30
30
40
40
50
50
60
60
70
70
80
80
90
90
100
100
0
Off N.O.
Off N.O.
On N.O.
t
10
10
20
20
30
30
40
40
50
50
60
60
70
70
80
80
90
90
100
100
0
Off N.O.
Off N.O.
On N.O.
Off N.C.
On N.C.
On N.C.
Setpoint = 50
Hysteresis = 10
Setpoint = 50
Hysteresis = 10
Relay units
Relay action: Decreasing
Relay action: Decreasing
Relay units
Relay action: Increasing
Relay action: Increasing
