08.11.2022
12/23
3.1 Comparison of VDD 500 versus BT 30
VDD 500
BT 30 (for details, see operating manual
Dimensions
62 x 29,4 mm, for details, see chapter Technical Data
VDD 500
62 x 37 mm
Legibility in the dark
Very good,
as illuminated
Difficult,
as not illuminated
Assignment of
sensors
Free assignment of the sensors R2.1 / R4.1 / R2.2 / R4.2
Free assignment of the sensors R2.1 / R4.1 / R2.2 / R4.2
Protection rating
- front side
- connection side
(rear side)
IP40
IP00
IP65
IP65
Display /
presentation
Temperature / status via text:
- Defrost = "d"
- Alarm = "AL"
Temperature / status via intuitive symbols:
- Defrost = "defrost snowflake"
- Alarm = "alarm symbol"
Wiring
complexity
High!
Each cable to each temperature display must be
stripped and connected individually:
Further wiring complexity:
- looping through the shield (E)
- mounting a terminating resistor at the end of the cable
(F)
- type of installation: Line structure
Simple!
Each BT 30 has a shielded RJ45 connector with
7m connection cable:
Connect the RJ45 distributor to the DISPLAY interface of
the controller via the connection cable, plug in up to four
BT 30s, done
Tip:
Optionally, a BT 300 can be used simultaneously on
the RJ45 distributor.
Further costs or the wiring:
-none
- Type of installation: Star structure
Connectivity
Spring-loaded terminal without shield. According to the
standard, only one wire or two wires may be inserted, in
which case only with TWIN wire end sleeves.
Shielded RJ45 connector with 7 m connection cable,
Plug and Play
Polarity of the
spring-loaded
terminal
Attention:
Deviating RS485 colour sequence compared
to the assignment established in the system (such as in
the Virtus-LINE):
VPC 5000 / Virtus 5: 1=Shield, 2=GND,
3=RS485-,
4=RS485+
VDD 500: A1=+9 V, A2=GND,
B+=RS485+, A-=RS485-
Hard-wired RJ45 connector,
protection against polarity reversal
