Xylem ecocirc XL, Инструкция по эксплуатации

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8 and Figure 7: Connection diagram for three phase models on page 8
for location. If there is a fault, the relay contact closes to display a red
status light and the error code on the user interface display. See User
interface on page 9. The relay contact closure can also be used to ener-
gize a remote fault display.
5.2.6.2 Signal relay for 3–phase pumps only
Two normally open relay contacts are available at terminals 22, 23 and
24, 25. If an error causes the pump to stop operating, the relay contact
closes and terminals 24–25 are closed. Terminals 23–24 indicate pump
stop/run status.
Table 1: Relay status
Motor running Motor stopped
No fault Relay 1 Open (24-25
open circuit)
Relay 2 Closed (22-23
short circuit)
Relay 1 Open (24-25
open circuit)
Relay 2 Open (22-23
open circuit)
Fault present Not possible Relay 1 Closed (24-25
short circuit)
Relay 2 Open (22-23
open circuit)
5.2.7 External sensors
Single phase pumps can be equipped with an optional differential
pressure sensor and a remote optional temperature sensor. The three
phase pumps are equipped with two absolute pressure sensors and an
optional external temperature sensor. Refer to the following table for
more information.
Sensor description Type
Terminals
1–Phase Pump 3–Phase Pump
Differential pressure
sensor 4-20 mA
15 psi
30 psi
9–10 —
Absolute pressure
sensors 4-20 mA
— —
17–18
15–16
Temperature sensor KTY82 13–14 11–12
Differential pressure sensor setup — single phase pumps only
1. Install differential pressure sensor on the pipe
2. Connect wires at terminals 9 and 10. See Figure 6: Connection dia-
gram for single phase models on page 8.
3. Turn on the pump.
4. Upon startup, the pump detects the sensor and displays the setup
menu.
5. Select the right sensor model and confirm the selection by using the
parameter button (3). See User interface on page 9.
6. The pump runs through the startup sequence and automatically
starts working in constant pressure mode (factory default). The sen-
sor must be wired to terminals 9 & 10.
7. The setpoint can be changed by using the settings button (5). See
User interface on page 9.
Pressure sensor setup — three phase pumps only
Two absolute pressure sensors are factory provided to be installed on
the pump flanges pressure ports and wired to terminals 15, 16 and 17,
18. The sensors must be installed to allow for precise pump operation
in constant and proportional pressure modes. In case of sensor failure,
the pump will display the corresponding alarm code (see par. 8.2) and
will continue to operate with limited precision using pressure estima-
tion.
External temperature sensor setup
The optional external temperature sensor setup and related control
modes are available only through RS-485 or wireless module connec-
tion.
For details refer to the electronic drive manual on www.bellgos-
sett.com
NOTICE:
The differential sensor cables shall not exceed 65 ft.
5.2.8 Communication bus
The pumps have two built-in RS-485 communication channels.
Single phase pumps — The standard channel is available on terminals
(15-16-17), while the second one is enabled only with optional RS-485
or wireless module on terminals (18–19–20). See Figure 6: Connection
diagram for single phase models on page 8.
Three phase pumps — The standard channel is available on terminals
(5-6-7), while the second one is enabled only with optional RS-485 or
wireless module on terminals (8-9-10). See Figure 7: Connection dia-
gram for three phase models on page 8.
The pump can communicate with external BMS systems via Modbus or
BACnet protocol. For a complete description of the protocols, refer to
the electronic drive manual, in addition to Modbus and BACnet instruc-
tion manuals at www.bellgossett.com.
NOTICE:
When remote control is active, the set points and control modes are
managed only through communication channels and cannot be
changed via the user interface. The displayed quantity and unit of
measurement remain active on the user interface.
5.2.9 Wireless module
The wireless module is an optional module, to be coupled with the
ecocircXL circulators. When correctly configured, it generates a wire-
less network accessible by a mobile device, tablet or a personal com-
puter. See wireless module instructions manual for details at www.bell-
gossett.com.
5.2.10 Automatic two pumps in parallel operation
Backup operation (bcup)
Only the lead pump runs. The second pump starts in case of failure of
the lead pump.
Alternate operation (alte)
Only one pump runs at a time. The working time is switched every 24
hours so that workload is balanced between both pumps. The second
pump is started immediately in case of failure of the lead pump.
Automatic parallel operation (para)
Both pumps run simultaneously at the same set point. Only when the
constant pressure mode is selected (for details see Control Modes on
page 9), the lead pump determines the behavior of the full system and
is able to optimize the performance. To guarantee the required per-
formance with the minimum power consumption, the lead pump starts
or stops the lag (second) pump to satisfy system requirement of flow
and head.
NOTE: The automatic optimization works correctly on most installa-
tions. In the case of unstable running, switch the pump operation to
“forced parallel operation” (forc).
Forced parallel operation (forc)
Both pumps run simultaneously with the same set point. The master
pump determines the behavior of the full system.
6 System Setup and Operation
CAUTION:
Always wear protective gloves when handling the pumps and
motor. When pumping hot liquids, the pump and its parts
may exceed 40°C (104°F).
NOTICE:
The pump must not run dry as this can damage the bearings. Fill the
system correctly with liquid and vent the air before first start-up.
6 System Setup and Operation
ecocirc ® XL INSTRUCTION MANUAL 11