Basler Electric DECS-400 - Manual (Page 140)

128 9369700990 Rev R
Generator and bus voltage sensing terminals are listed in Table 9.
Table 9. Generator and Bus Voltage Sensing Terminals
Terminal Description
A9 (E1) A-phase generator voltage sensing input
A10 (E2) B-phase generator voltage sensing input
A11 (E3) C-phase generator voltage sensing input
A13 (BUS1) A-phase bus voltage sensing input
A14 (BUS3) C-phase bus voltage sensing input
Generator Current Sensing
DECS-400 units have generator current sensing inputs for phases A, B, and C. An input is also provided
for sensing the current in a cross-current (reactive differential) compensation loop. Units with style
number XX1X connect to CTs with 1 Aac secondary windings. Units with style number XX5X connect to
CTs with 5 Aac secondary windings. Generator current sensing terminals are listed in Table 10.
Table 10. Generator Current Sensing Terminals
Terminal Description
A1 (CTA) A-phase generator current sensing input
A2 (CTA)
A3 (CTB) B-phase generator current sensing input
A4 (CTB)
A5 (CTC) C-phase generator current sensing input
A6 (CTC)
A7 (CCCT) Cross-current compensation input
A8 (CCCT)
Accessory Input
DECS-400 units accept two types of accessory (analog) signals for remote control of the setpoint: voltage
or current. Only one accessory input (either voltage or current) may be used at one time. The voltage
input accepts a signal over the range of –10 Vdc to +10 Vdc. The current input accepts a signal over the
range of 4 mAdc to 20 mAdc. If shielded cables are used, terminal A18 (GND) should be used for the
shield connection. Table 11 lists the accessory input terminals.
Table 11. Accessory Input Terminals
Terminal Description
A16 (V+) Positive side of voltage accessory input
A17 (V–) Negative side of voltage accessory input
A18 (GND) Shield connection for accessory inputs
A19 (I+) Positive side of current accessory input
A20 (I–) Negative side of current accessory input
Contact Inputs
Each contact input supplies an interrogation voltage of 12 Vdc and accepts dry switch/relay contacts or
open collector PLC outputs. DECS-400 units have six fixed-function contact inputs and 10 programmable
contact inputs. Information about assigning functions to the programmable contact inputs is provided in
the Functional Description chapter. Table 12 lists the contact input terminals.
Installation DECS-400