RKC INSTRUMENT RB Series - Digital Input (DI1, DI2) [Optional]; Current Transformer (CT) Input [Optional]

3. WIRING
IMR02C15-E4
3-13
 Digital input (DI1, DI2) [optional]
• Models that were specified with digital input when ordering can use the following terminal
numbers.
RB100: Terminal No. 13 to 15 (DI1, DI2)
RB700: Terminal No. 22 to 24 (DI1, DI2)
RB400/500/900: Terminal No. 16 to 18 (DI1, DI2)
• Digital input from external devices or equipment should be dry contact input. If it is not dry
contact input, the input should have meet the specifications below.
Contact specifications:
A
t OFF (contact open): 500 kΩ or more
A
t ON (contact closed) 10 Ω or less
• The following functions can be assigned to digital inputs. (Can be specified when ordering.)
SV selection, RUN/STOP transfer, Interlock release, Auto (AUTO)/Manual (MAN) transfer
To assign functions to digital inputs, refer to 8.5 Engineering Mode (P. 8-95).
 Current transformer (CT) input [optional]
• Models that were specified with a current transformer (CT) when ordering can use the following
terminal numbers When a current transformer (CT) input is specified, a digital output must also
be specified.
RB100: Terminal No. 16 to 18 (CT1, CT2)
RB700: Terminal No. 13 to 15 (CT1, CT2)
RB400/500/900: Terminal No. 22 to 24 (CT1, CT2)
• When using CT input, connect CTs to the relevant terminals.
Current transformer model code: CTL-6-P-N [Input range: 0 to 30 A] (sold separately)
CTL-12-S56-10L-N [Input range: 0 to 100 A] (sold separately)
• Current transformer (CT) input is not isolated between measured input.
Dry contact input
14
13
15
DI1
DI2
COM (−)
RB100 RB400/500/900
Dry contact input
17
16
18
DI1
DI2
COM (
−
)
CT input
17
16
18
CT1
CT2
COM
RB100 RB400/500/900
CT input
23
22
24
CT1
CT2
COM
RB700
Dry contact input
23
22
24
DI1
DI2
COM (
−
)
CT input
14
13
15
CT1
CT2
COM
RB700