Bardac drives T2-CASCD-IN User manual

HVAC Cascade Option Module
USER GUIDE
DECLARATION
All rights reserved. No part of this User Guide may be reproduced
or transmitted in any form or by any means, electrical or mechanical
including photocopying, recording or by any information storage
or retrieval system without permission in writing from the publisher.
Copyright Bardac Drives © 2020
The manufacturer accepts no liability for any consequences
resulting from inappropriate, negligent or incorrect installation.
The contents of this User Guide are believed to be correct at the
time of printing. In the interests of a commitment to a policy of
continuous improvement, the manufacturer reserves the right to
change the specication of the product or its performance or the
contents of the User Guide without notice.
SAFETY
This option is specically designed to be used with the HVAC
variable speed drive product and is intended for professional
incorporation into complete equipment or systems. If installed
incorrectly it may present a safety hazard. The HVAC drive uses
high voltages and currents, carries a high level of stored electrical
energy, and is used to control mechanical plant that may cause
injury. Close attention is required to system design and electrical
installation to avoid hazards in either normal operation or in the
event of equipment malfunction.
Please read the SAFETY NOTICE carefully, and all Warning and
Caution boxes elsewhere.
WARRANTY
All Bardac Drives products carry a 2-year warranty, valid from the
date of manufacture. Complete warranty info available online.
Bardac Corporation
Worldwide Industrial Control Solutions
40 Log Canoe Circle, Stevensville, MD 21666
Phone: [phone] | Fax: [phone]
[email protected] | bardac.com | driveweb.com
SAFETY NOTICES
WARNING is given where there is a hazard that could lead to
injury or death of personnel.
CAUTION is given where there is a hazard that could lead to
damage to equipment.
It is the responsibility of the installer to ensure that the equipment
or system into which the product is incorporated complies with
the EMC legislation of the country of use. Within the European
Union, equipment into which this product is incorporated must
comply with 89/336/EEC, Electromagnetic Compatibility.
WARNING Within the European Union, all machinery in which
this product is used must comply with the Directive 89/392/EEC,
Safety of Machinery. In particular, the equipment should comply
with EN60204-1.
CAUTION
• Store the option module in its box until required. It should
be stored in a clean and dry environment. Temperature range
–40ºF to +140ºF.
• Install the option module into the drive by inserting
the module into the option module port, as shown in
the mechanical installation section. Do not use undue
force in inserting the option module into the port.
WARNING
• Drives and the option module should be installed only by
qualied electrical persons and in accordance with local and
national regulations and codes of practice.
• Electric shock hazard! Disconnect and ISOLATE the drive
before attempting any work on it. High voltages are present
at the terminals and within the drive for up to 10 minutes
after disconnection of the electrical supply.
• Where the electrical supply to the drive is through a plug and
socket connector, do not disconnect until 10 minutes have
elapsed after turning off the supply.
STANDARDS CONFORMITY
A drive tted with this option module complies with the
following standards:
• CE-marked for Low Voltage Directive.
• IEC 664-1 Insulation Coordination within Low Voltage
Systems.
• UL 840 Insulation Coordination for electrical equipment.
• EN50081-2 EMC Generic Emissions Standard, Industrial
Level.
• EN50082-2 EMC Generic Immunity Standard, Industrial Level.
• Enclosure ingress protection, EN60529 IP00, NEMA 250.
• Flammability rating according to UL 94.
SPECIFICATIONS
Model Number: T2-CASCD-IN
Compatibility: V3 Series (HVAC)
P2 Series*
*limited functionality
Max Relay Switching Voltage: 250V AC / 30V DC
Max Relay Switching Current: 6A (250V AC) / 5A (30V DC)
Environmental: 14ºF . . . +122ºF
Conformity: IP20, UL94V-0
Terminal Torque: 0.5Nm (4.5 Ib-in)

LED STATUS INDICATION
The cascade module has a Status LED – LED A (Green).
• LED A: Constant Green Indication - Modular is OK
• LED A: Flashing Green Indication – No Communication with drive
• LED A: LED Off Indication – No power to module
LED B is not used.
V3 SERIES HVAC DEFAULT OPERATION
The additional relays will assume default conguration while
the DOL cascade function is disabled. Default (none cascade)
functions are listed in the table below) Once the DOL cascade
function is enabled (P8-14 = 1) the relays will assume DOL
operation as detailed in the ‘V3 HVAC cascade operation’ section
of this manual.
Default Operation (DOL Cascade disabled, P8-14=0)
Relay 3 Drive Healthy Indication (close on Healthy)
Relay 4 Drive Fault Indication (close on fault)
Relay 5 Drive Running Indication (close on enable)
V3 HVAC CASCADE RELAY CONFIGURATION SUMMARY
P8-14 P9-41 Function Selected
0 0 Default Operation
1 0 Cascade Operation
N/A 1 PLC Logic Dened Operation
MECHANICAL INSTALLATION
1. Option module inserted
into drive option
module port.
2. DO NOT use excessive
force when inserting the
option module into
the options port.
3. Ensure the expansion
module is tted securely
before powering on the drive.
4. Remove terminal block header from
option module prior to tightening
connections. Replace when wiring is completed. Tighten
to Torque setting provided in Specications.
OPTION MODULE CONTROL TERMINALS
Pin Function
1 Relay 3 Common
2 Relay 3 Contact
3 Relay 4 Common
4 Relay 4 Contact
5 Relay 5 Common
6 Relay 5 Contact
Option Module Slot
Option Module
HVAC Option Module
CONNECTION OF THE CASCADE MODULE TO P2 SERIES
The HVAC Cascade Expansion module can be used with a P2 Series model drive. For
P2 Series operation, the default or PLC dened functionality is available, but there is
no option to implement Cascade control. The table below shows relay conguration
summary when the module is connected to P2 Series drive.
P9-41 Function Selected
0 Default Operation
1PLC Logic Dened Operation
Default operation is identical to the V3 Series default operation.
V3 SERIES HVAC CASCADE OPERATION
The V3 Series HVAC DOL Cascade control uses a maximum of three relays from the
cascade option module and the 2nd user relay from the standard drive terminals,
giving the potential for 4 separate pumps under DOL control. The cascade option
module is required if the system requires more than 1 DOL pump or when the 2nd
user relay on the drive is required for another function. The basic conguration for
the drive and DOL pumps is shown below.
In this conguration the 2nd drive relay is used to control the rst DOL pump with
the cascade module controlling the remaining DOL pumps. In this conguration P2-
18 must be set to 8 to congure the 2nd drive relay for DOL pump control. P8-14
must be set to enable the DOL cascade function and P8-15 must be set with the
number of pumps that make up the cascade system (from 1 to 4). The relays in the
cascade module are assigned automatically starting with the lowest numbered relay.
If the 2nd relay is not assigned to DOL control then the conguration is as
shown below and a maximum of 3 DOL pumps are permitted.
For this conguration, only parameters P8-14 and P8-15 need be set and the relays
in the cascade module are assigned automatically starting with the lowest numbered
relay. When cascade mode is enabled (P8-14 = 1), the relays contained on the
cascade option module are dedicated to the cascade function.
LED A (Green)
Mains Input Supply
Mains Input Supply Cascade Relay Module
Cascade Relay Module
Sensor
Feedback
To Drive
PID
Sensor
Feedback
To Drive
PID
Relay 2 Output
Master Pump
Master Pump
DOL Pump 1
DOL Pump 1
Pump Output Channel
Pump Output Channel
DOL Pump 2
DOL Pump 2
DOL Pump 3
DOL Pump 3
DOL Pump 4
Relay 3 Output
Relay 3 Output
Relay 4 Output
Relay 4 Output
Relay 5 Output
Sensor
Sensor
Relay 5 Output