Operating Modes; Double Pump Mode - Wilo -Veroline IP-E Einbau- Und Betriebsanleitung

ENGLISH
Further equipment
Thermal overload protection
of the frequency converter
x
of the motor via PTC
x
An electronic overload monitoring device switches off the motor
in the presence of an overload.
For data storage the modules are equipped with a non-volatile
memory. This means that data is retained even during prolonged
down times. Once the voltage returns the pump starts operating
again with the values set before the power outage.
Pump kick: a pump that has been switched off for 24 hours (e.g.
via ext. off) is automatically operated for 5 seconds.
The module rating plate is to be found in the module terminal box
(Fig.1; pos. 5). It contains all data necessary for scheduling the unit.
+24 V (3) (output): Direct voltage for an ext. load/transmitter.
x
The + 24 V can be loaded with max. 60 mA. The voltage is short-
circuit-proof.
IN1 – 0 ... 10 V (1) (can be set to 2-10V; 0-20mA; 4-20mA);
x
actual value input, e.g. actual pressure value
Signal type
Voltage (0-10 V, 2-10 V)
Current (0-20 mA, 4-20 mA)
GND (2): connection to ground for signal input IN1
x
IN2 – 0 ... 10 V (can be set to 2-10V; 0-20mA; 4-20mA); set
x
value input
With control systems ∆p-c and ∆p-v and speed adjustment (regu-
lator mode) the IN2 can be used as input for the remote set value
adjustment. The set value follows the voltage / current as shown in
Fig. 6.
Signal type
Voltage (0-10 V, 2-10 V)
Current (0-20 mA, 4-20 mA)
GND (2): connection to ground for signal input IN2
x
aux.: unoccupied
x
Ext. off:
x
The pump can be switched on/off via the external potential-free
contact. Units which are switched on and off frequently (> 20
times a day) should be switched on and off via "Ext. off".
SBM (collective run signal):
x
A collective run signal can be attached via the potential-free
contact for a central control point.
SSM (collective fault signal):
x
A collective fault signal can be attached via the potential-free
contact for a central control point.
MP (Multi Pump): Interface for double pump communication
x

7.3 Operating modes

The IP-E / DP-E series can be operated in the 'Heating' and
'Refrigeration/Air-Conditioning' modes. The difference between
both operating systems resides in the fault tolerance for the hand-
ling of error messages.
'Heating' mode:
Errors are handled with tolerance (as will usually be the case), i.e.
depending on the error type involved, the pump will only signal a
fault when the same error occurs several times within a specified
time. Error matrix: 'HV'
'Refrigeration/Air-Conditioning' mode:
For all applications where each error (in the pump or unit) needs to
be detected rapidly (e.g. air-conditioning applications).
Each error is signalled forthwith (< 2 sec). In double pump mode,
the reserve pump reaches the old operating point within 3 seconds
after occurrence of the error. Error matrix: 'AC'
Both operating modes distinguish between faults and warnings. In
the case of a fault, the motor is switched off, the error code shown
on the display and the fault indicated by the red LED.
Faults always result in activation of the SSM (see sections 7.4 and
8.2).
34
Input resistance
_ 10 kÖ
Ri
>
R = 500 Ö
B
Input resistance
_ 10 kÖ
Ri
>
R = 500 Ö
B

7.4 Double pump mode

The following characteristics are only available if the internal MP
interface is used.
Both pumps are controlled by the master.
Pump fault: The other pump operates according to the standard
control of the maser. The master pump is the left-hand pump in
the direction of flow (see Fig.
connected to this pump!
IF(InterFace) module:
For communication between the pumps and the pump control pro-
cessor (via LON-BUS, PLR or interface converter), each pump
requires an IF module (accessory) which is plugged into a multiplug
in the terminal box (Fig. 1).
For double pumps only the master needs to be equipped with a PLR
or LON module!
Master – slave communication via an internal interface (terminal:
MP, see Fig. 2).
When using a pump control processor (PLR) / interface conver-
ter or the LON interface:
As a rule, the master pump is connected to the PLR or LON
Communication
PLR/interface converter
LONWORKS network
Peak load mode: At partial load, the hydraulic capacity is provi-
x
ded by one pump only. The second pump is connected at maxi-
mum efficiency, i.e. when the sum of the power consumptions P1
of both pumps in the partial load range is less than the power
consumption P1 of one pump. Both pumps are then adjusted
upwards simultaneously to max. speed.
Main / reserve mode: Each of the two pumps produces the
x
design delivery rate. The other pump can be used in the event of
the first pump malfunctioning or following a pump swap. Only
one pump operates at a time.
Operation in the event of a communication breakdown:
x
In the event of a communication breakdown both displays show
the error code 'E52'. During the breakdown both pumps behave
as single pumps.
Both modules indicate the fault via the ESM/SSM contact. Control
is taken over by the master irrespective of the previously set
mode.
The behaviour of the slave pump varies as a function of the
mode
Main/reserve mode: Slave is always switched off
Addition mode (master or slave operating): Slave is always swit-
ched off
Addition mode (master and slave operating): Slave operates at
maximum speed
After acknowledging the error display the status is indicated on
both pump displays during the communication breakdown. At
the same time, the ESM/SSM contact is reset.
During the communication breakdown the previous
CAUTION!
slave cannot operate in normal mode because the
pressure sensor is connected to the master.
After communication is restored the pumps resume operation in
normal double pump mode, as before the fault.
Pump swap: In double pump mode, a pump swap is carried out
x
every 24 hours. The time of the pump swap corresponds to the
time of the start-up.
External Off, actual value input IN1, set value input IN2, 24 V
x
output:
when connected to the master: affects the entire unit.
x
External Off can also be connected to the slave: affects only the
x
slave pump.
SSM: A collective fault signal (SSM) can be attached to the master
x
for a central control point. The contact may only be connected to
the master. The reading is valid for the entire unit. On the IR
monitor, this signal can be programmed as a single (ESM) or a col-
lective fault message (SSM). For single fault message, the con-
tact must be connected to each pump.
X
). The pressure sensor must be
1A
Master Slave
IF module PLR not required
IF module LON not required