Specifications
Model
DRF120-24-1
DRF240-24-1
DRF480-24-1
DRF960-24-1
Output
Line Regulation
Load Regulation
Ripple & Noise
mV
<96
<240
<240
<0.02
mV
mV
Temperature Coefficient
Minimum Load
%/°C
-
%
V
-
No minimum load required
>101 of peak current rating. Shutdown after 4 seconds
30 - 35.5
Over Current Protection
Over Voltage Protection
Remote Voltage Adjustment
Remote Sense
31.5 - 34
5 - 6V external voltage adjusts the output from 24 - 28V
None
-
Remote On/Off
-
When signal is low, the output is active
DC OK Relay
-
Relay contact 30V/1A (closed if Vout > 80% of rated output voltage)
Green LED = DC is OK (>80% Nom). Red LED = Peak Load Operation
Droop Mode. Refer to instruction manual
LED Indicators
-
Parallel Operation
Environmental
Operating Temperature
Storage Temperature
Humidity (non condensing)
Cooling
-
°C
°C
%RH
-
-25 to +70. Start up at -40. Derate linearly to 75% load above 60 (50 for the DRF960)
-40 to +85
5-95 (Operating & Storage)
Convection
Altitude
m
3,000
Withstand Voltage (For 1 minute)
Isolation Resistance
Vibration (Non operating)
Shock
Vac/Vdc Input to Output 3,000Vac, Input to Ground 1,500Vac, Output to Ground 500Vdc (DRF960: 500Vac)
MΩ
>100 (500Vdc) at 25°C & 70%RH
10-55Hz (sweep for 1 min.):19.6m/s2 constant, X,Y,Z axis 1 hour each
<196m/s2
-
-
Other
Weight (Typ)
g
600
900
1300
1735
Size (WxHxD)
mm
36.5 x 123.4 x 115
49 x 123.4 x 115
1.93 x 4.86 x 4.53
82 x 123.4 x 115
3.23 x 4.86 x 4.53
110 x 123.4 x 139
4.33 x 4.86 x 5.47
Size (WxHxD)
Inches 1.44 x 4.86 x 4.53
Case Material
-
-
Metal
Suitable for mounting on TS-35/7.5 or TS-35/15 DIN Rails
123,911 112,108
DIN Rail Type
MTBF - JEITA (RCR-9102B)*
Warranty
Hours
Years
140,001
1,103,504**
5
Notes
See website for detailed specifications, test methods and installation manual
* The JEITA RCR-9102B calculation method produces figures significantly lower than Telcordia. ** DRF960 calculated to IEC61709.
(1) Operating period at peak output current is 4 sec, max duty cycle <35% & < rated output power
(2) Safety certified for AC input only
(3) Utilizing remote on/off function
(4) Measured at 25%, 50%, 75% and 100% load conditions
Signal Connector Pin Assignment (DRF120 model shown)
PIN
Function
Detail
Signal Connector
1
2
3
4
5
6
7
8
CB
CB-COM
N/C
For parallel operation cut the link between
pins 1 & 2 for droop mode current share
No connection
N/C
CNT+
CNT-
PV
Remote ON/OFF control, when CNT+ is pulled to
TTL low the power supply turns ON, otherwise it turns OFF
Programming voltage range 5-6V presets the output to 24-28V
COMM
Signal Connector: please refer to instruction manual. Potentiometer on top of unit is for factory settings only. Please do not adjust.
3
DRF Series