Electrical Connections; Environmental Conditions; Ingress Protection - Mettler Toledo SLP85 D Serie Manual De Usuario

4 Operation

4.1 Electrical Connections

SLP85xD load cells have the following interfaces:
Power supply for the load cell
The load cells work with 12 to 24 V DC nominal range (10 to 30 V DC). Input current: 0.84 A
Use a stable power supply with no voltage fluctuations.
•
If voltage fluctuations cannot be prevented, use a voltage regulator to deliver a constant voltage value to
•
the load cell.
The power supply must be approved by the respective national test center of the country in which the
•
load cell will be used.
The power is supplied to the load cell via pins A and B in the communication connector.
Communication
Connector (2)
B
C
D
Digital inputs / outputs
Digital inputs
Number
Permissible input voltage 0 to +30 V
Low level
High level
Input resistance

4.2 Environmental Conditions

SLP85xD load cells can be operated within the following environmental conditions:
Temperature Range

4.3 Ingress Protection

SLP85xD load cells are hermetically sealed and have an IP rating of IP68 and IP69k
SLP85xD
2 1
Pin Signal
Industrial Ethernet
A UB1
B GND1
A
G
H
F
E
3
<1.5 V
>10 V
>1.2 kOhms
Compensated
Operating
Safe storage
1 IO connector, SLP854D
only
2 Communication
connector
RS232 service interface
Profibus DP
UB1
GND1
Digital outputs
Number
External supply voltage
Max. current of one
output
Accumulated current of
all outputs
Voltage drop
–10 ... +40 °C
–10 ... +50 °C
–20 ... +80 °C
3 digital inputs
5 digital outputs
Bus interface
(Profibus DP or
Ethernet IP or Profinet IO)
Service interfae (RS232)
Cable color
Red
Black
5
+11 to +30 V
<0.5 A
<1.2 A
<1 V
Operation 7