Monitoring Relays
Pump alternating
Type DLA71
Product Description
DLA71 is a level controller made to alternate 2 or 3 pumps
in a multiple pump system in a case of need(i.e.:overflow)
the second,or even the third pump can be activated together
with the first one.
In case more than one pump is required to start at the same
time,the pumps start 10s after the previous to avoid big
inrush current.
The LED indicates the state of the alarm and the output relay.
35.5mm wide housing suitable both for back and front panel
Property
• Pump alternating relay for 2 or 3 pumps
• Output: 2 x 5 A SPST relay or 3 x 5 A SPST
• For mounting on DIN-rail in accordance with
DIN/EN 50 022
• 35.5 mm DIN-rail housing
• LED indication for relay and power supply ON
• Galvanically separated power supply
• Built-in delay for the second or third pump in case of
simultaneous activation is required
• Built-in function for automatic rotation of the pumps
Type Selection
Mounting
DIN-rail
DIN-rail
Output
2 x SPST
3 x SPST
Function
For two pumps
For three pumps
Supply: 24/48 VAC
DLA 71 D B48 2P
DLA 71 T B48 3P
Supply: 115/230 VAC
DLA 71 D B23 2P
DLA 71 T B23 3P
Input Specifications
Contact input
DLA71...2P (normal mode)
ON/OFF 1 pump
ON/OFF 2 pumps
DLA71...2P (differential mode)
first pump starts
first pump stops
second pump start
second pump stop
DLA71...3P (normal mode)
ON/OFF 1 pump
ON/OFF 2 pumps
ON/OFF 3 pumps
DLA71...3P (full mode)
ON 1 pump
ON 2 pumps
ON 3 pumps
OFF all pumps
Disabled
Enabled
Voltage
Current
Empting mode
Filling mode
Terminals
C, S1
C, S2
C, S1
C, S3
C, S2
C, S4
C, S1
C, S2
C, S3
C, S1
C, S2
C, S3
C, S4
> 10 kΩ
< 1 kΩ
< 25 V
< 2 mA
N.O. contacts
N.C. contacts
Output Specifications
DLA71...2P
DLA71...3P
Rated insulation voltage
Contact ratings
(AgSnO
2
)
Resistive loads
AC 1
DC 12
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
Output
2 x SPST NO relay
3 x SPST NO relay
250 VAC
µ
5 A @ 250 VAC
5 A @ 24 VDC
1.5 A @ 250 VAC
1.5 A @ 24 VDC
≥
30 x 10
6
operations
≥
10
5
operations
(at 5 A, 250 V, cos
ϕ
= 1)
≤
7200 operations/h
Operating frequency
Dielectric strength
2 kVAC (rms)
Dielectric voltage
Rated impulse withstand volt. 4 kV (1.2/50 µs)
www.dold-relay.com
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BRAIN [ 博睿恩电子科技 ]
