24VDC/7.5A Power Supply for DIN Rail Mounting
The ZS20 series 1-phase power supplies from LUMEL can be used in areas of extreme industrial environmental conditions.
They comply with the latest technical standards.
Wide input voltage range:The ZS20 power supplies are suitable to wide range input voltages. With a single type it is therefore possible to meet almost all applications and consequently improve design and inventory management.
More power by "Power Boost":
As an example, a LUMEL power supply that features a continuous duty current of 5A at 60°C delivers an equivalent to 7.5A for at least 3 minutes with the "Power Boost" function. This feature allows the use of a smaller size device to power demanding loads such as motors, solenoid valves, lamps and other loads with transient overload behavior which would otherwise require an oversized power supply.
Three modes for output protection on site (settable via jumpers):1) "Hiccup" mode, automatic restart:
This is the default factory setting of all ZS20 units. In case of short- circuiting or overloading, the output current is interrupted. The device tries again to re-establish the output voltage and normal condition about every 2 seconds till the problem is cleared.
2) Manual reset and restart by operator:
In case of short-circuit or overload, the output current is interrupted. In order to restart the output it is necessary to switch off the input circuit for about 1 minute.
This protection mode is particularly suggested in applications where safety procedures require that a reset only has to be carried out by an authorized person.
3) Continuous output mode:
In case of short-circuit or overload, the output current is kept at high values with near zero voltage. In case of a short circuit the current can reach up to 3 times the rated current at 60°C.
This protection mode is used to meet the requirements of demanding loads such as motors, solenoid valves, lamps, PLC with highly capacitive input circuits and other loads with marked transient overload behavior.
"Power Good" Relay:The output voltage level is continuously monitored with this feature. The NO contact of the "Power Good" relay triggers any time the output voltage goes below 20VDC. This feature is particularly useful in redundant applications.
Technical data:Input voltage ranges: 85-264VAC and 120-370VDC
Output voltage: 24VDC ±3%
Voltage adjustment range (Vadj): 22-27VDC
Start up with capacitive load: < = 50,000µF
Output current: 7.5A @ +40°C
6.5A @ +50°C
5.0A @ +60°C
Power boost @ +60°C for 3 minutes: 7.5A
Power: 120-180W
Hold-up time: > = 20ms (230VAC)
Derating from +60°C: 2.5%/ °C
Efficiency: >87% (for 230VAC and nominal values)
Output overvoltage protection: 35VDC
Protection: short circuit, overload (EN 60204-1), overvoltage, over temperature
Ripple and noise: < = 120mVpp (with nominal values)
Relay "Power Good": Trigger @ 20VDC
Isolation voltage (IN/OUT): 3000VAC
MTBF: 500,000 h according to IEC 61709
Approval: CE
Mounting: vertical on DIN rail
Standard conformity: IEC/EN 60950 (VDE 0805), EN 50178 /VDE 0160,
SELV EN60950-1, PELV EN 60204-1
IEC/ EN 60950
EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5
EN 61000-6-4, EN61000-3-2
EN 60204-1
Operating temperature: -25 to +70°C
Storage temperature: -40 to +85°C
Operating humidity: up to 95% RH at +25°C
Housing protection: IP20
Class of protection: I, with PE connected
Cooling: free air convection
Connection terminal blocks: Screw type 2.5mm
Dimensions: 55 x 110 x 105mm³
Weight: ca. 0.5kg
