BECKHOFF FM33xx - Manual (Page 9)

Technical data
4 FM33xx
Electrical data
The following tables provide a summary of the electrical and fieldbus-
specific data related to the TC-Plug.
Technical data
(Version 1F.1 26.05.2000) FM3312 FM3332
General technical data
Power supply 24 V
DC
, +- 20% (19,2...28,8 V)
typical operating current 90 mA (24 V) 100 mA (24 V)
max. operating current 120 mA (24 V) 130 mA (24 V)
Power supply input protection
Reverse voltage
Over voltage
min. -35V
max. 35V
Potential separation
Thermocouples / PROFIBUS 500 V
rms
Thermocouples / Supply Voltage 500 V
rms
Supply Voltage / PROFIBUS 100 V
rms
Ambient temperature
Operating temperature 0...+55°C
Storage temperature -25...+85°C
Type of protection plug: IP65 (PROFIBUS-Connector: IP67)
Vibration EN 60068-2-6
10 Hz <= f <= 57 Hz: 0,075mm Amplitude
57 Hz <= f <= 150 Hz: 1,0 g
Shock EN 60068-2-27/29
15 g, 11 ms
Vibration conforms to EN 60068-2-6 / EN 60068-2-27, EN 60068-2-29
EMC immunity / EMC emission conforms to EN 61000-6-2 / EN 61000-6-4
Approvals CE, cULus*
*) For the compliance of the cULus requirements use 4 Amp. fuse or
class 2 power supply!
Thermocouple technical data
Number of Inputs 12 32
Type of Input Differential Input,
mV measurement,
high impedance grounded
no electrical separation
Connection two wire, direct connection
Wiring length max. 10 meter
Thermocouple sensor type type K:-100...1370°C
type J:-100...900°C
Common mode input voltage range -8 V...+8 V
Common mode rejection typical 90 dB (independent from conversion time)
Common mode rejection typical 150 dB (at 50 Hz or 60 Hz Rejection)
Normal mode rejection typical 98 dB (at 50 Hz or 60 Hz Rejection)
Resolution 0.1°C per digit
Linearization Error +-0,1°C (voltage to temperature)