Verifying That Dc Bus Capacitors Are; Discharged; High Temperature Alarms; Main Control Board (Mcb) Components - Carrier 19XRV Series Start-Up And Service Instructions

NAME COLOR
Green
Yellow
STS (Status)
Red
Red/Yellow
Green/Red
None (Unlit)
Red
ENET
Red/Green
Green
None (Unlit)
LINK Green
NOTES:
1. A Type 1 alarm indicates that a condition exists. Type 1 alarms are
user configurable.
VERIFYING THAT DC

DISCHARGED

The drive's DC bus capacitors retain hazardous voltages after in-
put power has been disconnected. Perform the following steps be-
fore touching any internal components:
1. Turn off and lock out input power. Wait 5 minutes.
2. Verify that there is no voltage at the drive's input power
terminals.
3. Measure the DC bus potential with a voltmeter while
standing on a non-conductive surface and wearing insulated
gloves (1000 v). Measure the DC bus potential. See Fig. 6 for
the 248-amp drive and Fig. 7 for the 289, 361, and 477-amp
drives. The voltage between DC+ and DC-, and from each
DC terminal to the chassis must be zero before proceeding.
4. Once the drive has been serviced, reapply input power.

HIGH TEMPERATURE ALARMS

Coolant flow through the cold plate is controlled by an orifice in
the refrigerant line leaving the cold plate. The orifice looks like
one of the O-ring face seal connectors and in fact is used as one of
the connections on the coolant tubing. If the orifice is present and
condenser liquid flow is present, the liquid will flash to cooler
temperature at the orifice. This temperature difference is great
enough to be easily felt.

MAIN CONTROL BOARD (MCB) COMPONENTS

Figure 16 shows the drive module with the cover removed. To ac-
cess the control boards, loosen the screw on the face of the keypad
mount and swing the keypad mount upward.
The components on the main control board (MCB) are shown in
Fig. 17. Note the location of the terminals labeled MCB I/O. The
high-pressure switch is wired to these terminals as shown in
Fig. 18. In the event of a high condenser pressure alarm, the con-
nections at these terminals should be checked and tightened if
necessary.
Typical wiring schematics are shown in Appendix A.
Table 4 — Drive Status Indicator Descriptions
STATE
Flashing
Steady
Flashing
Steady
Flashing
Steady
Flashing Alternately
Flashing Alternately
Off
Flashing
Steady
Flashing Alternately
Flashing
Steady
Off
Flashing
Steady
BUS CAPACITORS ARE
Drive ready but not running, and no faults are present.
Drive running, no faults are present.
Drive is not running. A type 2 (non-configurable) alarm condition exists, and the
drive cannot be started.
Drive is not running, a type 1 alarm condition exists. The drive can be started.
A major fault has occurred. Drive cannot be started until fault condition is cleared.
A non-resettable fault has occurred.
A minor fault has occurred. When running, the drive continues to run. System is
brought to a stop under system control. Fault must be cleared to continue. Use
parameter 950 [Minor Flt Config] to enable. If not enabled, acts like a major fault.
Drive is flash updating.
Adapter and/or network is not powered, adapter is not properly connected to the
network, or adapter needs an IP address.
An Ethernet/IP connection has timed out.
Adapter failed the duplicate IP address detection test.
Adapter is performing a self-test.
Adapter is properly connected but is not communicating with any devices on the
network.
Adapter is properly connected and communicating on the network.
Adapter is not powered or is not transmitting on the network.
Adapter is properly connected and transmitting data packets on the network.
Adapter is properly connected but is not transmitting on the network.
2. A Type 2 alarm indicates that a configuration error exists and the
drive cannot be started. Type 2 alarms are not configurable.
Fig. 16 — Drive Module with Cover Removed
11
DESCRIPTION
SWING UP KEY PAD
MOUNT TO ACCESS
CONTROL BOARDS
a19-1843