Rockwell Automation 1770-HT8 SMART TRANSMITTER User Manual
Page 123
Cable Length and Power Supply
Requirements
Appendix C
C-6
Table C.A
Typical Supply Voltages
Cable Length (ft)
Wire Gauge
AWG
Supply Voltage
3051
Supply Voltage
3044
100
16
21.8
23.8
20
21.8
23.8
24
21.9
23.9
500
16
21.9
23.9
20
22.0
24.0
24
22.3
24.3
1000
16
22.0
24.0
20
22.2
24.2
24
22.8
24.8
1500
16
22.1
24.1
20
22.5
24.5
24
23.4
25.4
2000
16
22.2
24.2
20
22.7
24.7
24
23.9
25.9
5000
16
22.7
24.7
20
24.0
26.0
24
27.0
29.0
10000
16
23.6
25.6
20
26.1
28.1
24
∗
∗
∗
24 AWG is limited to 5000 feet by HART specifications
Table C.B
Recommended Power Supplies
Voltage
Amperage
Manufacturer
Part Number
24 VDC
2.1 Amp
Acopian
A24MT210
3.5 Amp
Acopian
A24MT350
1.5 Amp
Phoenix Contact
CM 90ĆPSĆ110/230
VAC/24 DC/1.5
2.0 Amp
Phoenix Contact
CM 125ĆPSĆ110/230
VAC/24 DC/2
28 VDC
2..1 Amp
Acopian
A28MT210
3.0 Amp
Acopian
A28MT300
30 VDC
2.1 Amp
Acopian
A30MT210
3.0 Amp
Acopian
A30MT300