M-system JB2 User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-2642 Rev.3 P. 1 / 5
INSTRUCTION MANUAL
ANALOG BACKUP STATION MODEL JB2
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■PACKAGE INCLUDES:
Analog backup station (body + base socket) ......................(1)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection,
hardware setting and basic maintenance procedures.
When you need to change software settings, please refer to
the Operation Manual for Model PU-2x (EM-9255), Section
A.
POINTS OF CAUTION
■POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
11 – 35V DC rating: Approx. 120mA at 24V in CAS mode
Approx. 180mA at 24V in MAN mode
■GENERAL PRECAUTIONS
• Before you remove the unit from its base socket or mount
it, turn off the power supply and input signal for safety.
■ENVIRONMENT
• Indoor use.
• When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
• Environmental temperature must be within -5 to +55°C
(23 to 131°F) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
■WIRING
• Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■AND ....
• The unit is designed to function as soon as power is
supplied, however, a warm up for 10 minutes is required
for satisfying complete performance described in the data
sheet.
COMPONENT IDENTIFICATION
Connection Diagram
Front Cover
Specifications
Body Base Socket
■HOW TO OPEN THE FRONT COVER:
Hang your finger on the hook at the top of the front cover
and pull.
The shape of base socket may be different
for some models.
INSTALLATION
Detach the yellow clamps located at the top and bottom of
the unit for separate the body from the base socket.
Clamp
(top & bottom)
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
Shape and size of the base socket
are slightly different with various
socket types.
■DIN RAIL MOUNTING
Set the base socket so that its
DIN rail adaptor is at the bot-
tom. Hang the upper hook at
the rear side of base socket on
the DIN rail and push in the
lower. When removing the
socket, push down the DIN
rail adaptor utilizing a minus
screwdriver and pull.
■WALL MOUNTING
Refer to “EXTERNAL DI-
MENSIONS.”

JB2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-2642 Rev.3 P. 2 / 5
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.
■EXTERNAL DIMENSIONS unit: mm (inch)
80 (3.15)
50 (1.97)
72 (2.83)
107 (4.21)
136 (5.35) [3.3 (.13)]
80 (3.15)
20
(.79)
60 (2.36)
72 (2.83)
7.8 (.31)
CLAMP
(top & bottom)
DIN RAIL
35mm wide
2–4.5 (.18) dia.
MTG HOLE
25 (.98) deep
14–M3.5
SCREW
• When mounting, no extra space is needed between units.
12 56 14
11 1 1015
4
3
2
7
9
8
■CONNECTION DIAGRAM
+
–
MV OUTPUT
4 – 20mA DC
+
–
RE-TRANSMITTED OUTPUT
4 – 20mA DC
MAN STATUS CONTACT
RUN CONTACT
+
–
POWER
PU-2x
MODULAR JACK
+
–
CAS INPUT
9
15
5
6
4 – 20mA DC
8
MAN COMMAND
UP
DOWN
2
11
4
3
12
1
10
7
14

JB2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-2642 Rev.3 P. 3 / 5
FRONT VIEW & PROGRAMMING
Please refer to the Operation Manual for Model PU-2x (EM-9255), Section A: (A-1) Introduction, (A-2) General Operation
Description, (A-3) General Operation Flow Chart for general information.
Front Cover (open)
Span Adj.
Zero Adj.
RUN Output LED
MAN. Status LED
UP Command LED
DOWN Command LED
MAN. Command LED
Modular Jack
• PROGRAMMING WITH PU-2x
G
ITEM No.
I()
D
Response MessagesGROUP No.
Data to be entered
or Messages
LCD Display
• Response Messages
OK: OK
NG: No good. Check modular jack connection.
ER: Communication error
[GROUP 01]
ITEM MDFY. DATA INPUT DISPLAY CONTENTS
01 S MAINTENANCE SWITCH
0 MTSW : MON.MODE 0: Data indication only.
1 MTSW : PRG.MODE 1: All ‘P’ marked parameters are modifiable. *1
02 P Alphabets & No. TG : XXXXXXXXXX Tag name entry (10 characters max.)
03 D No input OUTPER : XXX.XX Output in %
04 D No input OUTVAL : XX.XXX Output value in mA
05 D No input INPPER : XXX.XX Input in %
06 D No input INPVAL : XX.XXX Input value in mA
10 P WRITE DEFAULT Initializing all setting values to the factory standard ones.
ENTR COMPLETED Initialization complete
21 P Manual control mode (factory set value: 1)
Specifies the initial MV output value when starting MAN control
1 1 : DIRECT CAS control signal value
2 2 : TRACE BACK CAS control signal value going back for ITEM 28 set time period
3 3 : FIXED VALUE Fixed value set in ITEM 29
22 P Numeric SLDBAK : XXX.XX MAN/CAS transition response (%/second)
Selectable range: 0.00 to 200.00
No sliding-back function with 0.00
23 P UP/DOWN response mode (factory set value: 0)
0 0 : UNIFORM Constant ramp rate while the key is held down.
1 1 : ONE+UNIFORM Normal response rate for once when the key is pressed.
Constant ramp rate if it is continuously held down.
22 : ACCELERATED Accelerated response when the key is pressed until it reaches the
constant ramp rate.
24 P Numeric KEYRES : XXX.XX UP/DOWN response time (ramp rate) (%/second)
Selectable range: 0.00 to 200.00 (factory set value: 10.00)
25 P High/Low alarm mode at CAS control (factory set value: 0)
0 0 : NO ALARM No alarm trip
1 1 : LOW ALARM Low alarm trip only
2 2 : HIG ALARM High alarm trip only
33 : ALL ALARM High/Low alarm trip
26 P Numeric ALMLOW : XXX.XX CAS input Low alarm setpoint (%)
Selectable range: -25.00 to 125.00 (factory set value: -25.00)
27 P Numeric ALMHIG : XXX.XX CAS input High alarm setpoint (%)
Selectable range: -25.00 to 125.00 (factory set value: 125.00)
28 P Numeric TRACEBACK : XX.X Retroactive time period (seconds)
Selectable range: 0.0 to 10.0 (factory set value: 0.0)
29 P Numeric MANFIX : XXX.XX Initial manual control value (%)
Selectable range: -25.00 to 125.00 (factory set value: 0.00)
30 P Numeric PWRFIX : XXX.XX Output in % after power on in manual control mode
Selectable range: -25.00 to 125.00 (factory set value: -25.00)
31 P Output value after power on
(see “JB2 Actions when the Power Supply is Recovered after Failure.”)
00: HOLD VALUE The value stored at the moment of power failure
11: FIXED VALUE The value preset in the ITEM 30
32 D No input NVRWRCNT: XXX Number of rewriting E2PROM (32-bit)
Count when changing program or power off

JB2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-2642 Rev.3 P. 4 / 5
Modication Code
D: No modification (writing) possible. Used only for monitoring (reading).
S: Modifiable at any time.
P: Modifiable only when the MAINTENANCE SWITCH is in the ‘PRG’ mode.
*1. RUN contact is open (coil de-energized) while in the programming mode.
■CAS INPUT HIGH/LOW ALARM
• Alarm Trip
The High/Low alarm trips when the CAS input signal reaches or goes beyond the respective setpoints specified with ITEM
26/27.
[Example] Low setpoint at 0.00%
The alarm trips when the input goes below 4.00mA.
• Alarm Reset
The High/Low alarm is reset when the CAS input signal goes out of the alarm zone by 1% deadband.
[Example] Lo setpoint at 0.00%
OPERATING MODES
The alarm is reset when the input goes above 4.160mA, at 4.161mA or more.
■CASCADE CONTROL MODE
The JB2 allows the CAS input (cascade control signal) from the PID controller to pass through at the MV output terminals.
■MANUAL CONTROL MODE
When the external MAN command contact is closed, the JB2 turns on to manual control mode.
Actual output signal is determined by following three operation modes:
MODE 1: Holds the CAS control signal at the moment of the MAN command.
MODE 2: Goes back the preset time period and hold the CAS control signal at that moment.
MODE 3: Holds a specific value preset by the Programming Unit (PU-2x).
In this mode, the output can be manipulated with external UP or DOWN commands.
When the MAN command contact is opened, the CAS control signal is recovered with smooth transition.
■TRANSITION FROM MAN TO CAS CONTROL MODE
The JB2 increases/decreases the MV output until it reaches to the same value as the CAS control signal, and turns on to CAS
control mode. The response time constant can be set/changed with the PU-2x.
If the external command contact is closed during the transition, the JB2 output holds the signal of this moment and turns on
to MAN control mode.
■JB2 ACTIONS WHEN THE POWER SUPPLY IS RECOVERED AFTER FAILURE
OPERATING MODE
BEFORE FAILURE
MAN COMMAND
STATUS AT RECOVERY ITEM 31: 0 ITEM 31: 1
CASCADE
OFF (CAS mode) Cascade control action Cascade control action
ON (MAN mode) *1
Manual control starting with the
CAS control signal at the moment
of failure
Manual control starting with a
specific value preset in ITEM 30
MANUAL
OFF (CAS mode) Cascade control action Cascade control action
ON (MAN mode) *1
Manual control holding the MAN
control signal at the moment of
failure
Manual control starting with a
specific value preset in ITEM 30
SLIDING-BACK
OFF (CAS mode) Cascade control action Cascade control action
ON (MAN mode) *1Manual control holding the transi-
tion signal at the moment of failure
Manual control starting with a
specific value preset in ITEM 30
*1. Approx. 0.3 seconds is required to switch from CAS to MAN when the power supply is recovered.

JB2
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-2642 Rev.3 P. 5 / 5
■DIFFERENCES BETWEEN JB AND JB2/A
Means to back up the output value is different.
JB: STATIC RAM (A large capacitance capacitor holds the value until the capacitor is discharged)
JB2/A: E2PROM (Output value is stored at E2PROM and held until the next rewrite)
JB: When power recovers during MAN control mode, the output value is different depending on the power fail period.
JB2/A: The output value at power recovery is selectable with ITEM 31. Refer to the following table.
OUTPUT VALUE AT POWER RECOVERY DURING “MAN” CONTROL MODE
JB Output value at the moment of power failure
(recovery within the memory time) Fixed value (recovery after the memory time)
JB2/A ITEM 31 : 0 ITEM 31 : 1
■COMPATIBILITY BETWEEN JB2 AND JB2/A
For JB2/A, the operation at power recovery is selectable (ITEM 30, 31).
When JB2 (without “/A”) is replaced with JB2/A compatibly, set JB2/A according to the ITEM 21 value of JB2 as following.
• When JB2 is set ITEM 21 as 1 (DIRECT) or as 2 (TRACE BACK)
Set JB2/A ITEM 30 as -25% and ITEM 31 as 0 (HOLD VALUE)
• When JB2 is set ITEM 21 as 3 (FIXED VALUE)
Set JB2/A ITEM 30 as -25%, and ITEM 31 as 1 (FIXED VALUE)
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
7 – 14 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4) Output: Check current across the terminal 2 (+) – 11 (–)
for MV output, 1 (+) – 10 (–) for the re-transmitted out-
put.
ADJUSTMENT PROCEDURE
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
■HOW TO CALIBRATE THE OUTPUT SIGNAL
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
1) ZERO: Apply 0% CAS input and adjust the re-transmit-
ted output to 0%.
2) SPAN: Apply 100% CAS input and adjust the re-trans-
mitted output to 100%.
3) Check ZERO adjustment again with 0% CAS input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
The MAN/CAS transition response time, UP/DOWN re-
sponse time (ramp rate), retroactive time period, CAS in-
put High/Low alarm setpoints are programmable using the
PU-2x Programming Unit. Refer to “FRONT VIEW & PRO-
GRAMMING.”
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.