WELBA MRF-2 Series User Manual

5. Operation
Page 22 104781 - MRF-2 | MRH-2 - V2.4 - 22.07.2020
5.4 Controller architecture
The MRF-2 | MRH-2 includes:
- 4 separate and independent thermostat - hereafter called "controller blocks“.
- 2 function blocks "Temperature alarms"
- 5 function blocks for digital inputs.
All blocks and functions can be set via the parameterization and are linkable.
MRF-2 | MRH-2
4 separate temperature controller blocks
2 function blocks „temperature alarms“
5 function blocks for „digital inputs“
INPUTS
OUTPUTS
Analog
input
Sensor F3
Sensor F2
Sensor F1
e.g.
KTY
PT-100
PT-1000
e.g.
Transducer
(thermocouple)
External setpoint
specification
Relay K1
Relay K2
Relay K3
Relay K4
Relay K5
Analog
output
Controller block 1 [P11]
may be: - 2-step-regulation
- PID pulsed
- PID analogue
Controller block 2 [P12]
May be: - 2-step-regulation
- PID pulsed
- PID analogue
INPUTS
OUTPUTS
OUTPUTS
INPUTS
Setpoint = C1
Actual value (may be)
Sensor input 1
Sensor input 2
Sensor input 3
analog input
Setpoint = C1
Sensor input 1
Sensor input 2
Sensor input 3
analog input
Relay K1
Relay K2
Relay K3
Relay K4
Relay K5
analog input
(may be):
Relay K1
Relay K2
Relay K3
Relay K4
Relay K5
analog output
(may be):
Controller block 3 [P13]
is always: - 2-step-regulation
Controller block 4 [P14]
is always: - 2-step-regulation
INPUTS
Setpoint = C1
Sensor input 1
Sensor input 2
Sensor input 3
analog input
INPUTS
Setpoint = C1
Sensor input 1
Sensor input 2
Sensor input 3
analog input
OUTPUTS
Relay K1
Relay K2
Relay K3
Relay K4
Relay K5
(may be):
OUTPUTS
Relay K1
Relay K2
Relay K3
Relay K4
Relay K5
(may be):
Func. temperature alarm 1 [H1]
may be: - act directly on relays
- act on controller block
- message on fault indicator
Func. Temperature alarm 2 [H2]
may be: - act directly on relays
- act on controller block
- message on fault indicator
(may be):
Controller block 1
Controller block 2
Controller block 3
Controller block 4
INPUTS
OUTPUTS
Relay K1 .. K5
Controller block
1 .. 4
Fault indicator
(may be):
(may be):
Controller block 1
Controller block 2
Controller block 3
Controller block 4
INPUTS
OUTPUTS
Relay K1 .. K5
Controller block
1 .. 4
Fault indicator
(may be):
Function digital input 1 .. 5 [H21 - H25]
May be: - act directly on relays - switch setpoint
- act on controller block - collective fault message
- switching regulator in standby
Dig. input 1
Dig. input 2
Dig. input 3
Dig. input 4
Dig. input 5
INPUTS
(may be):
OUTPUTS
(may be):
Relay K1
Relay K2
Relay K3
Relay K4
Relay K5
Controller block 1
Controller block 2
Controller block 3
Controller block 4
e.g.
Switch
Float switch
High pressure monitor
Low pressure monitor
Machine output
Digital
input 1
Digital
input 2
Digital
input 3
Digital
input 4
Digital
input 5
Actual value (may be)
Actual value (may be)

WELBA MRF-2 Series Specifications

General

Brand	WELBA
Model	MRF-2 Series
Category	Controller
Language	English