BEFORE USE ....

BEFORE USE ....
MEXM
INSTRUCTION MANUAL
VALVE POSITIONER
MODEL
(pot feedback; built-in SSR)
MEXM
BEFORE USE ....
n UNPLUGGING THE UNIT
• Before you remove the unit from its base socket or mount it,
turn off the power supply and power to a motor for safety.
n PACKAGE INCLUDES:
Signal conditioner (body + base socket)...................... (1)
Terminating resistor.................................................... (1)
n 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 +60°C
(23 to 140°F) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
Thank you for choosing M-System. Before use, check the
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.
n MODEL NO.
Confirm that the model number described on the product is
exactly what you ordered.
n INSTRUCTION MANUAL
This manual describes necessary points of caution when you
use this product, including installation, connection and basic
maintenance procedures.
n WIRING
• Do not install cables (power supply, input and output) 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.
POINTS OF CAUTION
n 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.
■ CONFORMITY WITH EC DIRECTIVES
• This equipment is suitable for Pollution Degree 2 and Installation Category II (power supply), Measurement Category
II (control output). Reinforced insulation (signal input
or output to power input: 300V and Modbus or feedback
resistance to control output: 250V) is maintained. Prior
to installation, check that the insulation class of this unit
satisfies the system requirements.
• The equipment must be mounted inside a suitable fire
enclosure.
• Altitude up to 2000 meters
• The actual installation environments such as panel configurations, connected devices and connected wires may
affect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure CE conformity.
n POWER INPUT RATING & OPERATIONAL RANGE
• Check the power rating for the unit on the specifications.
AC power input: 100 - 240V AC
Operational voltage range 85 - 264 V AC, 50 - 60 Hz
approx. 1.5 VA at 100 V
approx. 4 VA at 200 V
approx. 6 VA at 264 V
DC power input:100 - 240V DC
Operational voltage range: 85 - 264 V DC, approx. 1 W
COMPONENT IDENTIFICATION
Body
Base Socket
Connection Diagram
Front Cover
Specifications
n HOW TO OPEN THE FRONT COVER:
Position your finger on the hook at the top of front cover
and pull.
The shape of base socket may be different
for some models.
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4610
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MEXM
• Deadband adjustments
Select range from following table. (factory setting: 1.5%).
n FRONT PANEL CONFIGURATIONS
Modbus LED
Modbus transfer rate
Deadband adj. SW
Deadband (%)
0
0.1
1
0.3
Full-open position adj.
2
0.5
Full-close position adj.
3
0.7
Modbus setting SW2
4
1.0
Modbus setting SW1
5
1.5
6
2.0
7
3.0
8
5.0
9
8.0
Modbus node address x 1
Modbus node address x 10
Deadband
Manual open switch
Manual close switch
• Modbus LED
LED ON at power on, momently OFF with communication
signal. With switch setting error, two blinks in 1 sec. interval
are repeated.
Blinking pattern:
ON
ON
• Full-closed position adj.
Feedback potentiometer's 0 – 25% position is configurable
with full-closed position adjustment.
1 sec.
• Modbus setting
Transfer rate:
Transfer rate is configurable via frontal rotary switch. Set
0 – 3; 4 – 9 are unused.
0: 38.4 kbps (factory setting)
1: 19.2 kbps
2: 9600 bps
3: 4800 bps
Node address:
Node address (decimal number) tens and units places are configurable via frontal rotary switch. (1 – 99) (Factory setting: 00)
Parity, stop bit and data length
Parity, stop bit and data length are configurable via frontal
Modbus SW1 and SW2.
Modbus setting
• Full-open position adj.
Feedback potentiometer's 75 – 100% position is configurable
with full-open position adjustment.
Parity
Stop bit
Data length
SW1
SW2
OFF
OFF
None
2
8
ON (*)
OFF (*)
Even
1
8
OFF
ON
Odd
1
8
ON
ON
INSTALLATION
Detach the yellow clamps located at the top and bottom of the
unit for separating the body from the base socket.
n DIN RAIL MOUNTING
Set the base socket so that its DIN
rail adaptor is at the bottom. Position 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.
n WALL MOUNTING
Refer to the next drawings.
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.
Unused
(*) Factory setting
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4610
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MEXM
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram label on top of the unit.
n DIMENSIONS mm (inch)
CLAMP
(top & bottom)
20
(.79)
7.8 (.31)
DIN RAIL
35mm wide
8
7
6
5
2–4.5 (.18) dia.
MTG HOLE
25 (.98) deep
50 (1.97)
11 –M3.5
SCREW
107 (4.21)
136 (5.35)
80 (3.15)
80 (3.15)
4
9
3
10 11
[3.3 (.13)]
1
2
40 (1.57)
50 (1.97)
• When mounting, no extra space is needed between units.
n CONNECTION DIAGRAM
HOST
1
Modbus
Tx+/Rx−
DA
5
2
Tx−/Rx+
DB
6
3
SLD 4
Open
Close
M
Open
9 +
FEEDBACK
POTENTIOMETER
10
11 −
7 U (+)
CAPACITOR
MOTOR
Close
POWER
8 V (−)
Notice that when limit switches inserted in motor wiring the
making/breaking may cause stress on the SSRs.
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4610
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MEXM
ADJUSTMENTS
CHECKING
1) Terminal wiring: Check that all cables are correctly connected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal 7
– 8 with a multimeter.
3) Feedback potentiometer: Check voltage across the terminals 9 – 11 to show approx. 3.3V and 10 – 11 within 0 to
approx. 3.3V.
4) Output: Check voltage across the output terminals.
MANUAL OPERATION
Even when there is no input signal from Modbus, there is
the possibility to force the position to 0% or 100% using the
manual operation switches (OPEN COM and CLOSE COM) in the
panel accessible from the frontal side.
Manual operation switch has priority over the opening position
from Modbus, therefore, when the control is intended to be
from Modbus, be sure to turn off the manual operation switch.
Also turning both (open and close) switches on, both will be
out of function.
n FULL-CLOSE POSITION
Turn manual close switch on or apply 0% setpoint signal and
adjust the 0% position with full-close position adj. Adjustable
within 0 to 25%. (factory setting: 0%)
n FULL-OPEN POSITION
Turn manual open switch on or apply 100% setpoint signal
and adjust the 100% position with full-open position adj.
Adjustable within 75 to 100%. (factory setting: 100%)
Check once more full-close position and confirm there is no
deviation, if so, adjust repeatedly.
After adjustment, be sure to turn off manual switches.
n DEADBAND
Protect from hunting, adjusting deadband switch to the most
significant value available.
It stops, immediately after a deviation goes into deadband
range and the control will be recovered when it is out of the
deadband range.
WIRING
■ HOST PC WIRING
Terminator
HOST PC
MEXM
MEXM
Tx+/Rx–
Tx–/Rx+
SG
Rx+
Rx–
DA
DB
SLD
DA
DB
SLD
Terminator
Connect terminating resistor between DA and DB of both ends of the unit.
Connect the attached terminating resistor to the MEXM.
Master unit is connectable also at both ends or other points.
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4610
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MEXM
MODBUS
n COMMANDS
The resistor allocation displayed on address map table , read to the next commands and writing is possible.
FUNCTION
COMMAND
FUNCTION
01
Read Coils
Read Coil (0X)
02
Read Discrete Inputs
Read Discrete Input (1X)
03
Read Holding Registers
Read Holding Register (4X)
04
Read Input Register
Read Input Register (3X)
05
Write Single Coil
Write on Coil (0X)
06
Write Single Register
Write on Holding Register (4X)
15
Write Multiple Coils
Write on Coil (0X) (multiple addresses)
16
Write Multiple Registers
Write on Holding Register (4X) (multiple addresses)
It is recommended to wait for the response period beyond timeout value, 0.5 second, every time command is used.
When there is no response, perform error handling, such as a retry, appropriately.
n ADDRESS MAP
TYPE
Coil (0X)
ADDRESS
1–7
FUNCTION
(reserved)
8
Start running
9
(reserved)
10
Clear motor lock alarm
11 – 32
Discrete Input (1X)
NAME
1: Drives motor to target position.
0: Stops motor (manual open/close swithces function is available)
Setting "1" to clear motor deadlock alarm.
Checks motor deadlock alarm turned "0" and sets "0" on that bit.
(reserved)
1
Motor closing output
0: OFF 1: ON "1" while closing
2
Motor opening output
0: OFF 1: ON "1" while opening
3–7
(reserved)
8
Motor deadlock alarm
9
(reserved)
10
System error
11 – 32
0: Normal
1: Motor deadlock alarm at overload etc.
Operation is stopped while motor lock alarm
Stops alarm after chekking the cause of the error using "motor
lock alarm stop."
0: Normal
1: Abormalities on the system about DIP switch status etc.
(reserved)
Input Register (3X)
1
Position output
Actual position of the feedback potentiometer is displayed.
Signed: 0.01 % Unit: (e.g.: 100 = 1.00 %)
Holding Register
(4X)
1
Target position input
Sets the intended position controled motor from Modbus master.
Signed: 0.01 % Unit: (e.g.: 100 = 1.00 %)
Setting available range: -0.50 % – +100.50 %
"(Reserved)" means address that is going to have an intended use in the future.
Value can be read or writen at moment but when writing in a multiaddress if straddling reservation address etc, to write on
the reserved address, it is reccomended to write "0."
"0" is read when there is no other assignation; it is not writable.
LIGHTNING SURGE PROTECTION
In order to product the unit from lightning surges entering
through power supply cables, use of appropriate Lightning
Surge Protectors are recommended. Please contact M-System.
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-4610
P. 5 / 5
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