Woodward DSLC-2 - DSLC-2 Interface Remote Control; Modbus Sending Binary Digital Orders

Manual 37443A DSLC-2 - Digital Synchronizer and Load Control
Page 190/226 © Woodward
DSLC-2 Interface Remote Control
For a remote setting of the control setpoints, it is necessary to use the interface setpoints instead of the internal
setpoints. No password is required to write this value. All other setpoint sources are configured accordingly. Con-
trol orders can be sent via Ethernet (Modbus/TCP) or RS-485 Modbus RTU.
Sending Setpoints Over Interface
Some setpoints can be sent over the communication interface.
ID
Parameter
CL
Setting range
Default
Description
7642
Active power
setpoint for
baseload
control
-
1 kW to
999999,9 kW
-
Setpoint for the active power control. The setpoint is a long integer
32 to provide a wide range from 1 kW to 999999,9 kW. Negative
values are not allowed.
Example:
1000 kW = 1000 = 3E8Hex
Note: This setpoint will be only accepted when the parameter
Load control setpoint source (parameter 7634) ist configured to
“Interface”.
7640
Setpoint
power factor
control
-
-710 to 1000 to
710
-
The power factor is set as a value (integer 16) between -710 to
1000 to 710. A negative value is capacitive, a positive value is in-
ductive, 1000 = cosϕ 1. Other values are not accepted by the unit.
Example:
cos ϕ = c0.71 cap. -710 FD3AHex
cos ϕ = 1.00 1000 03E8Hex
cos ϕ = i 0.71 ind. 710 02C6Hex
Note: This setpoint will be only accepted when the parameter
VAR control setpoint source (parameter 7635) ist configured to
“Interface”.
Table 10-6: Modbus – sending setpoint sover interface
Sending Binary Digital Orders Over Interface
Some single functions can be passed over from discrete inputs to the communication interface.
Table 10-7: Modbus – sending binary digital orders over interface
Function
Terminal
Controllable by
Check
67
Discrete input or communication interface
Permissive
68
Discrete input or communication interface
Run
69
Discrete input or communication interface
CB Aux
70
Discrete input
Voltage Raise
71
Discrete input or communication interface
Voltage Lower 72 Discrete input or communication interface
Base Load
73
Discrete input or communication interface
Load / Unload
74
Discrete input or communication interface
Ramp Pause 75 Discrete input or communication interface
Load Raise
76
Discrete input or communication interface
Load Lower
77
Discrete input or communication interface
Process Control
78
Discrete input or communication interface
Segment Connection 12 Act.
141
Discrete input
Segment Connection 23 Act.
142
Discrete input
Segment Connection 34 Act.
143
Discrete input
Segment Connection 45 Act.
144
Discrete input
Segment Connection 56 Act.
145
Discrete input
Segment Connection 67 Act.
146
Discrete input
Segment Connection 78 Act. 147 Discrete input
Segment Connection 81 Act.
148
Discrete input
Droop Tracking
149
Discrete input or communication interface