GWA – 250
page 8 of 8
Technical data
Auxiliary power supply
Permitted supply voltage:
20 V to 253 V AC / DC 48...62 Hz, reverse polarity protected
Power consumption:
≤
2,5 VA / 1,75 W
Overvoltage category:
II
acc. to DIN EN 61010-1
Protection classification:
II
double or reinforced insulation
Isolation voltage:
4kV~
Auxiliary power to relay outputs to signal inputs
Galvanic isolation:
All supply, input and output channels among each other as well as both relay outputs
from each other are safe galvanically isolated.
Relay outputs
Function: 2x
potential-free changeover contact
Switching power of the contacts:
U~
maximum 253 V AC
I~
maximum 6 A AC (maximum switch-on current 10A)
P~
maximum 1500 VA at ohmic load / 300 VA at cos
≥
0,7
at U-
maximum I-
maximum P-
30 V
6 A
180 W
110 V
0,3 A
33 W
220 V
0,12 A
26,4 W
Minimum switching load:
≥
50mW (0,5 V / 1 mA)
Switching cycles:
≥
100.000 switching cycles at maximum contact load
Delay time:
≤
0,4s
±
0,1s resp.
≤
4s
±
1s
Switching hysteresis
0,5%
±
0,2% / at two-position-control
∆
s: limit value A – limit value B
Signal input GWA – 250
Direct voltage:
0…10 V / maximum 50V / input resistance 100k
Ω
Direct
current:
0…20mA
/
4…20mA
/
maximum 400mA at 30V – self resetting fuse
Input
resistance
50
Ω
+ 0,2V
Measuring
deviation:
≤
0,4%
of nominal measuring range
Temperature
deviation:
≤
0,2% / 10 K of nominal measuring range
Measurand transmitter supply:
overload and short circuit protected
3-wire-sensor:
≥
21,2V at 20mA
≥
20,7V at 27,5mA min. 27,5mA / max. 25V
2-wire-sensor:
≥
20,0V at 20mA
≥
19,0V at 27,5mA min. 27,5mA / max. 25V
Signal input GWAP – 250
Temperature resistor Pt100:
3-wire- / 2-wire-measuring, resistance linear, measuring current 2 x 0,515mA
±
10µA
Measuring range:
Zero value: –50°C, 0°C +50°C / range: 30 Kelvin, 50 Kelvin, 100 Kelvin, 600 Kelvin
Measuring
deviation:
≤
0,4% (at zero value –50 / +50°C end value error
≤
2%) of nominal meas. range
Temperature
deviation:
≤
0,2% / 10 K of nominal measuring range
Wire
resistance:
≤
40
Ω
per wire
Error supervising:
At wire break / short circuit of one or multiple Pt100 connection wires the output
relays are switched off (at safety function minimum safety). At short circuit resp.
wire link between terminals 1 and 2 the device operates in 2-wire-measuring
Materials
Connection housing:
PA – polyamide
Terminal housing:
PA – polyamide
Sticker:
PE – polyester
Connection terminals
Number:
3 resp. 4 terminal blocks with each 4 terminals, everlasting screws
Connection cross-section:
maximum 1 x 2,5 mm or 2 x 1,5 mm
Housing style
Housing:
Series installation housing, 22,5mm wide
Weight: 100
g
Environmental conditions
Environmental temperature:
Single installation – 40°C...+85°C
Series installation – 40°C...+70°C
Climatic classification:
3K3 resp. 3M2
DIN EN 60721-3-3
Protection classification:
IP20
DIN EN 60529
EM – compatibility:
emission
DIN EN 61326-1
operation device class B
immunity
DIN EN 61326-1
industrial range
