Feeder Terminal
REF 541, REF 543, REF 545.
1MRS750443-MBG
50
Overview of REF hardware configurations
Hardware modules of REF 541
Order number
REF541K_1
15AAAA
REF541K_1
15BAAA
REF
541K_1
15C
A
AA
REF541K_1
15AABA
REF541K_1
15BABA
REF
541K_1
15C
A
BA
REF541K_1
15AAAB
REF541K_1
15BAAB
REF541K_1
15AABB
REF541K_1
15BABB
REF541K_1
18AAAA
REF541K_1
18BAAA
REF
541K_1
18C
A
AA
REF541K_1
18AABA
REF541K_1
18BABA
REF
541K_1
18C
A
BA
REF541K_1
18AAAB
REF541K_1
18BAAB
REF541K_1
18AABB
REF541K_1
18BABB
Analogue interface
Sensor channels (current or voltage)
9 9 9
9 9
9 9 9
9 9
Current transformer 1/5 A
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Current transformer 0.2/1 A
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Voltage transformer 100 V
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Main processor boards
CPU module
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Power supply boards
PS1: 80...265 Vdc/ac (High)
1
1
1
1
1
1
1
1
PS1: 80...265 Vdc/ac (Medium)
1
1
1
1
1
1
1
1
PS1: 18...80 Vdc (Low)
1
1
1
1
PS2: 80...265 Vdc/ac
PS2: 18...80 Vdc
Digital I/O boards
BIO1: threshold voltage 155 Vdc
1
1
1
1
1
1
1
1
BIO1: threshold voltage 80 Vdc
1
1
1
1
1
1
1
1
BIO1: threshold voltage 18 Vdc
1
1
1
1
BIO2: threshold voltage 155 Vdc
BIO2: threshold voltage 80 Vdc
BIO2: threshold voltage 18 Vdc
Analogue I/O board
RTD/analogue module
1 1 1 1 1 1 1 1 1 1
Display boards
Graphic HMIHMI display, fixed
1 1 1 1 1 1
1 1 1 1 1 1
Graphic HMI display, external
1 1 1 1
1 1 1 1
Mechanical design
1/2 enclosure
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Digital inputs
15
15
Power outputs, single-pole
0
0
Power outputs, double-pole
5
5
Signal outputs (NO)
2
2
Signal outputs (NO/NC)
5
5
Supervised trip circuits
2
2
IRF outputs
1
1
RTD/analogue inputs
0
8
Analogue outputs
0
4