Yokogawa JUXTA M Series Digital Limit Alarms MVRK - Manual (Page 8)

IM 77J04R31-01E 1st Edition : 2006.08.31-00 8
14. MAIN SPECIFICATIONS
■ Model and Suffix Codes
- 0 0 - / Digital Limit Alarm (RTD Input Type)
General use type
Always 0
24 V DC
± 10%
100-240 V AC/DC (Operating range: 85 to 264 V AC/DC)
RTD input
Custom order
Alarm output (transfer contact [1a1b] ), 2 points
Alarm output (NO contact), 4 points
1 to 5 V DC
4 to 20 mA DC
Communication function (RS-485)
No monitor output
UP
DOWN
OFF (No burnout)
Without socket
Model
MVRK
Suffix Codes
Type
Power Supply
Input Signal
Output Signal
Monitor Output
Burnout
Optional Specification
3
6
1
2
6
A
P
N
U
D
N
-U
-Z
0
/SN
-0
Description
■ Input and Display
Number of inputs: 1 point
Input signal: Set the measured input range within the instrument input range. (Refer to
Section 7.1.)
Input resistance: 1 M Ω (4 k Ω during power off)
Allowable leadwire resistance: [Input span ( ° C ) ϫ 0.4 ( Ω )] or 10 Ω per leadwire, equal or
less than whichever is smaller. (Make the resistance of each wire the same.)
However, when used with BARD-700, this value can be added to the BARD
internal resistance.
Detective current: Approx. 0.5 mA
Maximum allowable input:
± 4 V DC
PV (measured value) display: 4-digit, 7-segment, red/green LED, character height of
13.5 mm
Data display: 4-digit, 7-segment, green LED, character height of 9 mm
Alarm indicator lamp: 2 orange LEDs for 2 points of alarms or 4 orange LEDs for 4
points of alarms. Lights up if an alarm occurs.
Economical mode: Turns off the indicating LED if no keystroke is made within the set
time.
Setting range: 0 (does not go off) or 1 to 60 minutes
Active color PV display (PV display color changing function): This function changes the
PV display color from green to red or from red to green according to the set
PV display color mode shown below.
[PV display color mode to be set]
Link to alarm 1: Links to alarm 1.
Link to alarm 1 and alarm 2: Links to alarm 1 and alarm 2.
Link to alarm 1 to alarm 4 (only for 4 points of alarms): Links to alarm 1 to alarm 4.
SP deviation: Changes the PV display color according to whether measured value is
less than SP deviation high limit or SP deviation high limit or more; whether
measured value is more than SP deviation low limit or SP deviation low limit
or less.
PV limit: Changes the PV display color according to whether measured value is less
than measured range high limit or measured range high limit or more;
whether measured value is more than measured range low limit or measured
range low limit or less.
Fixed color: Fixes PV display color in green or red.
■ Output
Signal type: Relay contact
Number of outputs: 2 points of contact outputs (transfer contact [1a1b] ) or 4 points of
contact outputs (NO contact)
Contact rating: 120 V AC/1 A, 220 V AC/0.5 A (resistance load)
30 V DC/1 A, 120 V DC/0.1 A (resistance load)
Alarm action:
PV high-limit alarm
PV low-limit alarm
Deviation high-limit alarm
Deviation low-limit alarm
Deviation high and low-limit alarm
Deviation within high and low-limit alarm
Energized or de-energized under normal condition
Energized or de-energized under normal condition
Energized or de-energized under normal condition
Energized or de-energized under normal condition
De-energized under normal condition
De-energized under normal condition
Alarm action Relay action
Alarm setting range: Within the input range
Setting resolution: 1 digit (0.1 ° C)
Setpoint setting: Virtual setpoint when the deviation alarm occurs
Setting range: Within the input range
Setting resolution: 1 digit (0.1
° C)
Hysteresis setting range: The value resulting from adding a hysteresis value to an alarm
setpoint should be within the set input range.
Setting resolution: 1 digit (0.1 ° C)
Alarm ON delay setting: Condition monitoring time from the establishment of alarm
conditions to its output
Setting range: 0 to 999 seconds
Setting resolution: 1 second (However, about 0.2 second is to be added to the set time
to prevent wrong operation.)
Alarm OFF delay setting: Condition monitoring time from the establishment of return-to-
normal conditions to its output
Setting range: 0 to 999 seconds
Setting resolution: 1 second (However, about 0.2 second is to be added to the set time
to prevent wrong operation.)
■ Monitor Output
● Analog Output
Output signal: 1 to 5 V DC or 4 to 20 mA DC
Allowable load resistance: 2 k
Ω or more for 1 to 5 V DC
350 Ω or less for 4 to 20 mA DC
Output variable range: -6 to +106%
Output scaling: Set any value within the measured input range. (Set the value so that
the input range corresponding to the output scaling is 10 ° C or more.)
Output accuracy: ± 0.1% of output span
However, the accuracy is limited in the following cases according to the output
scaling setting.
When the input range corresponding to the output scaling converted into resistance is
less than 130 Ω in the instrument input range H:
Accuracy=
± 0.1 (%) ϫ 130 ( Ω )
Input range converted into resistance ( Ω )
(%)
When the input range corresponding to the output scaling converted into resistance is
less than 38.6 Ω in the instrument input range M :
Accuracy=
± 0.1 (%) ϫ 38.6 ( Ω )
Input range converted into resistance ( Ω )
(%)
● Communication Output (RS-485)
The MVRK can be connected to a personal computer, graphic panel, Yokogawa’s
programmable controller FA-M3 or programmable controllers of other manufacturers.
Standards: EIA RS-485
Maximum number of connectable units: 31 units
Maximum communication distance: 1200 m
Communication method: 2-wire half duplex, start-stop synchronization, non-procedural
Baud rate: 1200, 2400, 4800 or 9600 bps
Data length: 8 or 7 bits
Stop bit: 1 or 2 bits
Parity: Even, odd or none
Communication protocol: PC link, PC link with SUM, MODBUS ASCII, MODBUS RTU or
Ladder
PC link communication: Communication protocol with a personal computer, graphic
panel or UT link module of FA-M3
MODBUS communication: Communication protocol with a personal computer
(SCADA).
Ladder communication: Communication protocol with ladder communication module of
FA-M3 and programmable controller of other manufacturers.
■ Standard Performance
Input display accuracy: ± 0.1% ± 1 digit of instrument input range span
Alarm action point setting accuracy: ± 0.1% ± 1 digit of instrument input range span
Response speed: 500 ms (Time to alarm output when the input change is 10 to 90% and
alarm setpoint is 50%. When the alarm delay setting and hysteresis are
minimum.)
Burnout: UP, DOWN or OFF
Burnout time: 60 seconds or less
Action: High-limit alarm output for UP, Low-limit alarm output for DOWN
Insulation resistance: 100 M Ω /500 V DC between inputs, alarm outputs, power supply
and monitor output mutually.
Withstand voltage: 2000 V AC/minute between inputs, (alarm outputs 1, 2, 3 and 4),
monitor output and power supply mutually.
However, the following is excluded.
1000 V AC/minute between (alarm outputs 1 and 4) and (alarm outputs 2 and
3) and between inputs and monitor output.
(For 2 points of alarms, alarm outputs 3 and 4 are excluded.)
Power supply voltage: 24 V DC ± 10%, 100-240 V AC/DC (-15%, +10%) 50/60Hz
Power consumption: 24 V DC 2.7 W, 110 V DC 2.5 W, 100 V AC 4.2 VA,
200 V AC 5.4 VA
Effect of power supply fluctuation: ± 0.1% of span or less for the fluctuations within the
allowable range of each power supply specification
Effect of ambient temperature change: ± 0.2% of span or less for a temperature change
of 10 ° C
Effect of leadwire resistance change: ± 0.2 ° C or less for a change of 10 Ω/ leadwire
■ Mounting, Appearance and Environmental Conditions
Construction: Plug-in type
Material:
Casing; ABS resin (black), UL94 V-0
Socket; Modified polyphenylene oxide resin, including glass fiber (black),
UL94-V1
Mounting method: Wall or DIN rail mounting
Connection method: M3.5 screw terminal for input/output and power supply
3-pin 2-piece connector for monitor output
External dimensions: 51 (W) ϫ 86.5 (H) ϫ 133 (D) mm (including a socket)
Weight: Main unit; approx. 270 g
Socket; approx. 80 g
Operating temperature range: 0 to 50 ° C
Operating humidity range: 5 to 90% RH (no condensation)
Operating conditions: Avoid installation in such environments as corrosive gas like
sulfide hydrogen, dust, sea breeze and direct sunlight.
■ External Dimensions
103
133 50
*1 To be added when the monitor output is specified.
Monitor output
terminal *1
10
30 3.3 7.8
2-Ø4.5
Mounting hole
(depth: 24.5)
DIN rail
40
35.4 81 80 86.5 85
Main unit Socket
51 max.
11-M3.5 ϫ 7
screw
Unit: mm