Schrack Technik 301 series User manual

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User’s manual

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Thank you for choosing a product from the MultiCOM range.
The accessories described in this manual are high quality products, rigorously
designed and built for optimal performance.
This manual contains detailed instructions on how to use and install the product.
©Reproduction of any part of this manual without the prior consent of the manufacturer strictly prohibited.
For the purpose of improving it, the manufacturer reserves the right to modify the product described herein
at any time and without notice.
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This equipment must be used only for the purpose for which it was expressly
designed. Any other use is to be considered improper and therefore dangerous. The
manufacturer may not be held liable for any damage caused by improper, incorrect
and unreasonable use.
In case of failure and/or unsound operation of the equipment, refrain from making any
attempt to repair it yourself but instead contact your local service centre.

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OVERVIEW 4
INSTALLATION 5
OPENING THE PACK AND CHECKING CONTENTS 5
COMMUNICATION PORT SERIAL 1 7
COMMUNICATION PORT SERIAL 2 7
CONFIGURATION 8
TERMINATION RESISTOR OF THE RS-485 BUS 10
INSTALLATION OF MULTICOM 301 10
INSTALLATION OF MULTICOM 302 10
TYPICAL INSTALLATION 11
FIRMWARE UPGRADING 11
DATA SHEET 12
SIGNALS OF THE CONNECTORS 12
MODBUS/JBUS PROTOCOL 13
SUPPORTED FUNCTION 13
TABLES OF STATES,MEASUREMENTS,NOMINAL DATA AND COMMANDS 13
COMMANDS CODES 16

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MultiCOM 301 / 302 is a device that provides users with two independent serial ports
(SERIAL 1 and SERIAL 2) for monitoring of the UPS, using different communication
protocols. The accessory is compatible with UPS that use the communication
protocols GPSER and SENTR (PRTK: GPSER1…, SENTR1…).
MultiCOM 301 is an accessory external to the UPS which is connected to the UPS via
serial cable; MultiCOM 302, on the other hand, is an expansion card to be inserted in
a slot in the UPS (only on models supporting it) as indicated in the figure below. The
two products have exactly the same features and the descriptions found in this manual
apply to both products (where not otherwise specified).
A - “SERIAL 2” port
B - Signalling LEDs:
GREEN: serial line “SERIAL 1” active
YELLOW:serial line “SERIAL 2” active
C - “SERIAL 1” port
D - Power supply connector
E - Connector for connection to the UPS
NOTE: the LEDs, which normally are lit, flash at irregular intervals to indicate the
flow of data on the line.
ED
C
BA CA
B
UPS
MultiCOM 301 MultiCOM 302

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OPENING THE PACK AND CHECKING CONTENTS
After opening the package, first proceed to check its contents.
The pack must contain:
MultiCOM 301
External power supply
12V D.C. 0.3A (1)
Serial cable RJ45-DB9 (3)
MultiCOM 302
Serial cable DB9-DB9 (2)
CD-Rom
OR

(1) For MultiCOM 301 only
(2) Cable type: null-modem.
To be used for connection of the “SERIAL 1” port (cable length: 2 m)
(3) To be used for connection of the “SERIAL 2” port (cable length: 2 m)

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COMMUNICATION PORT SERIAL 1
The SERIAL 1 port offers an RS-232 serial line through which the UPS can be
monitored using the following protocols:
Protocol
Baud Rate [bps]
Parity
Stop Bit
GPSER
1200
No Parity
1
COMMUNICATION PORT SERIAL 2
The SERIAL 2 port offers an RS-485 Half-Duplex serial line or an RS-232 serial line
through which the UPS can be monitored using the following protocols:
Protocol
GPSER
MODBUS / JBUS RTU
Baud Rate [bps]
1200
2400
4800
9600
19200
38400*
57600*
Parity
No Parity
Even
Odd
Stop Bit
1
2
* Only with Firmware version 01.05 or higher.
NOTE: The values in bold type indicate the default configuration.
Where it is the GPSER protocol that is used on the SERIAL 2 port:
In RS-232 configuration, the device address must obligatorily be set to zero
In RS-485 configuration, the device address must NOT be set to zero (see
slave address configuration)

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CONFIGURATION
Through the MultiSetup.exe program, which is found on the CD-Rom supplied, you
can configure the communication parameters of the SERIAL 2 port and set the
protocol to be used by the UPS. To use the program, connect the SERIAL 1 port to
any serial port of the PC by means of the null-modem cable provided. To make the
chosen configuration effective, the accessory must be powered down and then
powered up.
The SERIAL 2 port can be set as an RS-232 or RS-485 Half Duplex port by taking
suitable action on the jumpers JP10, JP11, JP12, JP13 as indicated in the table below.
MultiCOM 301
MultiCOM 302
JP1
CLOSED
NOT FITTED
JP2
JP3
NOT FITTED
CLOSED
JP4
JP5
NOT FITTED
JP6
OPEN
JP7
JP8
JP9
JP10
RS-485: The 2 low pins closed (232 silk-screen print side) [DEFAULT]
RS-232: The 2 high pins closed (232 silk-screen print side)
JP11
JP12
JP13
JP14
OPEN
JP15
NOT FITTED
JP16
JP17
Soldered jumper
CLOSED OPEN NOT FITTED
Jumper with 2 pins (JP1…JP9):graphic example of the various setting possibilities

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To choose the slave address from 1 (default value) to 31, set the DIP-switch as
indicated in the table that follows (0=OFF, 1=ON)
SLAVE ADDRESS
DIP 1
DIP 2
DIP 3
DIP 4
DIP 5
0
0
0
0
0
0
1 (DEFAULT)
1
0
0
0
0
2
0
1
0
0
0
3
1
1
0
0
0
4
0
0
1
0
0
5
1
0
1
0
0
6
0
1
1
0
0
7
1
1
1
0
0
8
0
0
0
1
0
9
1
0
0
1
0
10
0
1
0
1
0
11
1
1
0
1
0
12
0
0
1
1
0
13
1
0
1
1
0
14
0
1
1
1
0
15
1
1
1
1
0
16
0
0
0
0
1
17
1
0
0
0
1
18
0
1
0
0
1
19
1
1
0
0
1
20
0
0
1
0
1
21
1
0
1
0
1
22
0
1
1
0
1
23
1
1
1
0
1
24
0
0
0
1
1
25
1
0
0
1
1
26
0
1
0
1
1
27
1
1
0
1
1
28
0
0
1
1
1
29
1
0
1
1
1
30
0
1
1
1
1
31
1
1
1
1
1
To choose a value greater than 31, you have to select a Base Address (0-default-, 32,
64, 96, 128, 160, 192, 224) using the software MultiSetup.exe.
Slave Address = Base Address + [DIP-switch configuration]
NOTE (only for MultiCOM 301 model): For access to the DIP-switches and to the
jumpers, disconnect the power supply connector and the serial cables, take out the
four screws on the bottom of the device and remove the wrap-around tape.

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TERMINATION RESISTOR OF THE RS-485 BUS
The device comes with the termination resistance already fitted inside (Rt=120Ω). To
connect this resistance, take action on the DIP-switch no. 6.
dip switch n° 6 ON → Rtconnected
dip switch n° 6 OFF → Rtnot connected [DEFAULT]
INSTALLATION OF MULTICOM 301
1. Connect the UPS SERIAL port of the device to the UPS serial port using the
cable provided with the UPS.
2. Connect the null-modem serial cable DB9-DB9 to the SERIAL 1 port.
3. Connect the RS-485 network or DB9-RJ45 serial cable to the SERIAL 2 port.
4. Connect the power supply to the device.
NOTE: the power supply must be connected to an outlet protected by UPS.
INSTALLATION OF MULTICOM 302
1. If the UPS is provided with the maintenance by-pass and supply of power to the
load must not be interrupted, activate it by following the instructions in the UPS
user’s manual.
2. Switch off the UPS.
3. Take the cover off the expansion slot by removing the two securing screws.
4. Take off the central part of the cover by removing the junction points.
5. Insert MultiCOM 302 in the slot.
6. Put the cover back on and tighten the two screws.
7. Connect the null-modem serial cable DB9-DB9 to SERIAL 1.
8. Connect the RS-485 network or the serial cable DB9-RJ45 to SERIAL 2.
9. Switch the UPS on again and remove the maintenance by-pass (if activated
previously).

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TYPICAL INSTALLATION
Illustrated below is an example of a typical installation of a MultiCOM 301
FIRMWARE UPGRADING
The equipment can be programmed again by the user for upgrading of the firmware.
The upgrading files and the instructions needed are available from the
manufacturer’s internet site.
SLAVE
UPS
PC
PC
SLAVE
MultiCOM 301
BUS 485
RS-232

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MultiCOM 301 / 302
POWER SUPPLY (1)
Input voltage (VDC)
12
Maximum input current (mA)
100
ENVIRONMENT
CONDITIONS
Operating temperature (°C)
0 ÷ +40
Storage temperature (°C)
-5 ÷ +50
Relative humidity (in operation) (%)
80 (max.)
Relative humidity (in storage) (%)
90 (max.)
PHYSICAL
CHARACTERISTICS (2)
Dimensions H x L x D (mm)
28 x 77 x 158
Weight (g)
300
(1) Polarity of the connector:
(2) The physical characteristics described refer solely to the MultiCOM 301
SIGNALS OF THE CONNECTORS
SERIAL 1
SERIAL 2
1 2 3 4 5
678 9
1 2 3 4 5678
PIN #
SIGNAL
PIN #
SIGNAL
RS485
RS232
1
n.c.
1
n.c.
2
RXD
2
GND
3
TXD
3
RXTX- (B)
RXD
4
DTR
4
RXTX+ (A)
TXD
5
GND
5
GND
6
n.c.
6
≡ PIN 3
7
RTS
7
≡ PIN 4
8
n.c.
8
n.c.
9
n.c.
n.c. not connected

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SUPPORTED FUNCTION
SUPPORTED
FUNCTION
FUNCTION DESCRIPTION
ACCESSIBLE
DATA AREA
1 (0x01)
BIT READING
STATES
2 (0x02)
STATES
3 (0x03)
REGISTERS READING
ALL
4 (0x04)
ALL
6 (0x06)
SINGLE REGISTER WRITING
COMMANDS
16 (0x10)
MULTIPLE REGISTER WRITING
COMMANDS
TABLES OF STATES,MEASUREMENTS,NOMINAL DATA AND COMMANDS
REGISTER(1)
STATES
BIT(2)
NUMBER
ADDRESS
NUMBER
ADDRESS
1
0
1
0
Test in progress
2
1
3
2
Shutdown active
4
3
5
4
Battery charged
6
5
Battery charging
7
6
Bypass bad
8
7
9 11
8 10
On bypass
12
11
Battery low
13
12
Battery working
14
13
UPS locked
15
14
Output powered
16
15
2
1
17 28
16 27
Input Mains present
29
28
Alarm temperature
30
29
Alarm overload
31
30
UPS failure
32
31
3
2
33 48
32 47
4
3
49 63
48 62
Communication lost with UPS
64
63
5 8
4 7
65 128
64 127
(1) The register number n must be addressed n-1 in the data packet.
(2) The bit number n must be addressed n-1 in the data packet.

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REGISTER(1)
MEASUREMENTS
UNIT
NUMBER
ADDRESS
9 11
8 10
12
11
Input mains star voltage V1
V
13
12
Input mains star voltage V2
V
14
13
Input mains star voltage V3
V
15
14
Input current phase L1
0.1*A
16
15
Input current phase L2
0.1*A
17
16
Input current phase L3
0.1*A
18
17
Input frequency
0.1*Hz
19 21
18 20
22
21
Bypass mains star voltage V1
V
23
22
Bypass mains star voltage V2
V
24
23
Bypass mains star voltage V3
V
25
24
Bypass frequency
0.1*Hz
26
25
Output star voltage V1
V
27
26
Output star voltage V2
V
28
27
Output star voltage V3
V
29 31
28 30
32
31
Output current phase L1
0.1*A
33
32
Output current phase L2
0.1*A
34
33
Output current phase L3
0.1*A
35
34
Output peak current phase L1
0.1*A
36
35
Output peak current phase L2
0.1*A
37
36
Output peak current phase L3
0.1*A
38
37
Load phase L1
%
39
38
Load phase L2
%
40
39
Load phase L3
%
41 43
40 42
44
43
Output frequency
0.1*Hz
45 47
44 46
48
47
Battery voltage
0.1*V
49 50
48 49
51
50
Battery current
0.1*A
52
51
Remaining Battery Capacity
%
53
52
54
53
Remaining back-up time
Minutes
55 61
54 60
62
61
Internal UPS temperature
°C
63
62
Sensor 1 temperature
°C
64
63
Sensor 2 temperature
°C
65 72
64 71
(1) The register number n must be addressed n-1 in the data packet.

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REGISTER(1)
NOMINAL DATA
UNIT
NUMBER
ADDRESS
73 77
72 76
78
77
Output nominal voltage (star)
V
79
78
Output nominal frequency
0.1*Hz
80
79
Output nominal power
100*VA
81 83
80 82
84
83
Battery nominal capacity (battery expansion included)
Ah
85
84
Battery benches
(1 or 2)
86
85
Battery type
Integer
87 112
86 111
REGISTER(1)
COMMANDS
UNIT
NUMBER
ADDRESS
113
112
Command code (2)
Integer
114
113
Shutdown delay time
Seconds
115
114
Restore delay time
Minutes
116
115
117
116
Command result (3)
Integer
118
117
REGISTER(1)
DIAGNOSTIC
UNIT
NUMBER
ADDRESS
119
118
Counter of processed correct messages
Integer
120
119
Counter of processed NOT correct messages
Integer
(1) The register number n must be addressed n-1 in the data packet
(2) Refer to “Command codes” paragraph
(3) Command result = Command code if command is handled from the UPS
Command result = Command code + 100 if command is NOT handled from the UPS
Command result = 0 if Command code is wrong

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REGISTER(1)
SPECIAL FLAGS (SENTR UPS)(2)
UNIT
NUMBER
ADDRESS
121
120
Byte 1 of “s = xx..” code / Byte 2 of “s = ..xx” code
Flags
122
121
Byte 1 of “c = xx..” code / Byte 2 of “c = ..xx” code
Flags
123
122
Byte 1 of “b = xx..” code / Byte 2 of “b = ..xx” code
Flags
124
123
Byte 1 of “r = xx..-..” code / Byte 2 of “r = ..xx-..” code
Flags
125
124
Byte 3 of “r = ....-xx” code / Byte 1 of “i = xx..-..” code
Flags
126
125
Byte 2 of “i = ..xx-..” code / Byte 3 of “i = ....-xx” code
Flags
127
126
Byte 1 of “a = xx..-....” code / Byte 2 of “a = ..xx-....” code
Flags
128
127
Byte 3 of “a = ....-xx..” code / Byte 4 of “a = ....-..xx” code
Flags
REGISTER(1)
MultiCOM DATA
UNIT
NUMBER
ADDRESS
129
128
Firmware version
Integer*100
130
129
Sensor 1 temperature (3)
°C
131
130
Sensor 1 humidity (3)
%
(1) The register number n must be addressed n-1 in the data packet
(2) In order to decode these registers, please refer to the UPS manual
(3) Only for models with environmental control sensors
COMMANDS CODES
CODE
COMMAND
1 (0x0001)
Command Shutdown
2 (0x0002)
Command Shutdown and Restore
3 (0x0003)
Delete Command (code 1, 2, 12)
12 (0x000C)
UPS on Bypass
20 (0x0014)
Test Battery
22 (0x0016)
Test Panel