Woodward 9907-252, Инструкция по установке и эксплуатации, Страница: 32 / 36

Load Sharing Module Manual 02035
28 Woodward
Appendix.
LSM Control Specifications
POWER SUPPLY
18–32 Vdc, approximately 5 W. Protected
against undervoltage, overvoltage to +80 Vdc,
reverse voltage to –32 Vdc.
INPUTS
3-phase PT Inputs 100–240 Vac line-to-line, 50–400 Hz. PT input
burden is 1.6 W per phase at 240 Vac, 0.4 W
per phase at 120 Vac.
3-phase CT Inputs 3–7 Arms at full load, CT input burden at full
load is 0.1 VA per phase.
Load Sharing Input 0–3 Vdc into 25 k Ω impedance in isochronous
mode, open circuit in droop mode.
Sync Input Compatible with optional Woodward SPM-A
Synchronizer, 0.75% speed change
*
per volt
input.
Speed Trim ±7.5% speed change
*
with an external 10 k Ω
potentiometer.
Droop Switch The external droop switch is to be wired in
series with the auxiliary circuit breaker contact
between terminals 13 and 14. Droop mode is
selected when either the droop switch or the
auxiliary circuit breaker is open.
5 Vdc Reference Optional external reference used to set output
offset and clamp voltages. 10 k
Ω input
impedance.
OUTPUTS
Load Signal DC signal proportional to total real current
measured by the Load Sharing Module. Load
Gain adjustable over minimum range of 0.86 to
2.0 Vdc/Arms.
Analog Output DC output, internally limited to +0.5 Vdc min,
+4.5 Vdc max. Zero error output = +2.50±0.05
Vdc. 2 k
Ω output impedance.
ADJUSTMENTS
Droop Provides 0 to 11% speed reduction
*
between no
load and full load conditions.
Load Gain Provides adjustment of the load on an individual
generator when two or more generators are
paralleled. Adjusts specified full load condition
from 3 to 7 Arms.