General information about power supply of devices of SENS Measurement System

Power supply for devices of SENS Measurement System (sensors and secondary devices) is provided by DC sources. Standard power supply  voltage (to minimize power consumption) is 9V. However, in case of significant length line, and taking into account voltage drop, the system can be powered by 12V (most devices have power supply range from 5 to 16 V) - see “Technical specifications” of devices). 
Exterior view and connection diagrams of power supply units are shown in fig. 1... 8, technical parameters - see table 1.
Some types of power supply units provide parallel connection to reach required output current - see table 1.
Some types of SENS Measurement System secondary devices also function as power supply units due to having built-in power supply unit, for example MS-K-500-BP-..., adapters LIN-...-12/24V (-220V), power supply and switching units BPK-... 
Note: In case of using 3rd party power supply units, it is required to connect plus and “line” wires using 0,5 ... 1 kOhm resistor (pull-up resistor).

Connection diagrams

Technical parameters (table 1)

Type of power supply unit

BP-9V-0.4A

BP-9V-0.7А-DC24

BP-9V-1A

BP-9V-1A-VZ1

BP-9V-0.3А-КН-ВЗ

BP-9V-0.3А-КН-DC24-ВЗ

Housing material

shock-proof polystyrene

aluminum alloy

steel 09Mn2Si

Explosion protection

-

-

-

1ExdbIIBT4Gb

1ExdIIBT4

1ExdIIBT4

Ambient temperature range, С

5…50

-40…50

5…50

-50…60

-50…60

-50…60

Климатическое исполнение по ГОСТ 15150

-

-

-

УХЛ1

УХЛ1

УХЛ1, М

Water and dust ingress protection degree as per IEC 60529

IP20

IP66

IP66

IP66

IP66

Input voltage (Uin), V

~85…265V,

47…440Hz

10…30

~220V+-10%,

50+-3Hz

~220V+-10%,

50+-3Hz

~220V+-10%,

50+-3Hz

5…30

Power consumption, W, not more

10

10

20

20

10

10

Output voltage, V

8,6…12.5*

9+-5%

9+-10%

9+-10%

8.5+-5

8.5+-5

Nominal load current, A

0…0.4

0…0.7

0…0.4

0…0.4

0…0.3

0…0.3

Maximal load current, A

0.5 (4h)

1 (15 min) with Uin˃11V

1 (30 min)

1 A (30 min)

-

-

Short circuit current, A

-

-

˂3.8

3.8

0.5…1

0.5…1

Overload and short circuit protection

yes

yes

yes

yes

yes

yes

Input and output overvoltage protection

yes

yes

yes

yes

yes

yes

Overheating protection

yes

-

yes

yes

-

-

Parallel connection of several units

yes

yes

yes

yes

-

-

Line data exchange function

-

-

yes

yes

-

-

Control button for deactivation/check of VS-5 signaling device, connection/ disconnection of line power supply

-

-

-

-

yes

yes

Type of voltage conversion

pulsed PSU

pulsed PSU

step-down transformer

step-down transformer

step-down transformer

pulsed PSU

Overall dimensions, mm

70×90×22,5

58×90×19,1

130×94×57

268×177×90

124×123×114

124×123×73

*Adjustable.

Designation

Designation of power supply units: BP-9V-1A, BP-9V-1A-VZ, BP-9V-0.4A, BP-9V-0.7A-DC24, BP-9V-0.3A-KN-VZ, BP-9V-0.3A-KN-DC24-VZ.