Vega VEGAMET 624 - Page 49

Relay outputs
Quantity 3 x operating relay, 1 x fail safe relay
Function Switching relay for level or pulse relay for flow/
sampling pulse
Contact Floating spdt
Contact material AgSnO2, hard gold-plated
Turn-on voltage min. 10 mV DC, max. 250 V AC/DC
Switching current min. 10 µA DC, max. 3 A AC, 1 A DC
Breaking capacity min. 50 mW, max. 750 VA, max. 40 W DC (with U
less than 40 V)
1)
Min. programmable switching hysteresis 0.1 %
- Fault signal (switch over) Switching status off; unchanged
Mode pulse output
- Pulse length 350 ms
Current outputs
Quantity 3 x outputs
Function Current output for level or flow/sampling pulse
Range 0/4 … 20 mA, 20 … 0/4 mA
Resolution 1 µA
Max. load 500 Ω
Fault signal (switch over) 0; 3,6; 4; 20; 20,5; 22 mA, unchanged
Linearity error relating to 20 mA 0.08 %
Temperature error relating to 20 mA 0.005 %/K
Mode pulse output
- Voltage pulse 12 V DC at 20 mA with load 600 Ω
- Pulse length 200 ms
I²C interface for VEGACONNECT
Quantity 1 x on front plate
Plug connection I²C socket 4-pole for VEGACONNECT
Ethernet interface (optional)
Quantity 1 x, cannot be combined with RS232
Data transmission 10/100 MBit
Plug connection RJ45
Max. cable length 100 m (3937 in)
1)
If inductive loads or stronger currents are switched through, the gold plating
on the relay contact surface will be permanently damaged. The contact is
then no longer suitable for switching low-level signal circuits.
VEGAMET 624 • 4 … 20 mA/HART signal conditioning instrument 49
11 Supplement
28969-EN-091116