Datakom DK-40 User Manual

DK-40 USER MANUAL V2.6 (02.08.2011)
K13D01-E - 12 -
Start procedure:
If mains phase voltages and frequency are between preset limits and the phase order is
correct, then the POWER led will turn on. The compressor may run only when the power
led is on. Otherwise it cannot run.
The Run mode of operation is selected by pressing the RUN button or by sending
REMOTE START/STOP signal (if enabled). At this position, when the pressure falls below
P05 Start Pressure (or pressure switch closes) the unit decides to run the compressor.
Befor running the compressor the STAR relay output becomes active. After P15 Delay
between Relays Timer LINE relay will be activated. Thus the motor starts in star mode.
After P23 Star Timer the STAR relay opens and after P24 Star/Delta Transition Timer the
DELTA relay operates.
After P25 Timer before Loading the LOAD relay operates and the compressor starts
producing compressed air.
Unloading and reloading:
When the pressure reaches P04 Stop Pressure (or pressure switch opens) then the LOAD
relay opens and the compressor runs unloaded during P26 Unload Timer. If the pressure
falls below P05 Start Pressure before the expiration of the timer, then the LOAD relay
energizes again.
Stopping and restarting:
If the pressure stays over the P05 Start Pressure limit (or pressure switch opened) during
P26 Unload Timer, then the DELTA relay will release. After P15 Delay between Relays
timer, the LINE relay releases.
In this situation, the RUN led starts flashing.
The maximum number of starts that the compressor may perform in one hour is adjusted
with P37 Maximum Starts per Hour parameter.
If the maximum start count is reached, then the compressor stopping is disabled and it will
continue to run unloaded until the end of 1 hour period.

Datakom DK-40 Specifications

Power

supply voltage (IN-COMM to IN-400V)	305 – 460 VAC
supply voltage (IN-COMM to IN-230V)	175 - 275 VAC
supply frequency	50 - 60 Hz nominal
power consumption	< 4 VA

Measurement Inputs

voltage input range (L-L)	20 - 520 V AC
voltage input range (L-N)	10 - 300 V AC
frequency input range	30 - 100 Hz

Accuracy

voltage accuracy	0.5% + 1 digit
frequency accuracy	0.5% + 1 digit
voltage burden	< 0.1 VA per phase

Relay Outputs

relay output current	5 A
relay output voltage	250 V AC
external switch resistance	< 3 K-ohms

Inputs

pressure input range	4-20 mA (optional 0-10 V)
temperature input range	1000-5000 ohms
motor PTC input alarm threshold	2000 ohms

Operating Environment

operating temperature	-30°C to +80°C (-22°F to +176°F)
storage temperature	-40°C to +80°C (-40°F to +176°F)
maximum humidity	95% non-condensing

Physical Characteristics

degree of protection (front panel)	IP 54
degree of protection (back panel)	IP 30
dimensions	134x107x54 mm (WxHxD)