LEESON Micro Series Dynamic Braking Kit User Manual
Page 2
2.0
INSTRUCTIONS FOR KITS:
174192.00
2.1
PARTS LIST
(1) Dynamic Braking & Additional Form C Relay Board (9955-XXX)
(1) Resistor assembly (if ordered)
(2) Screw with captive lockwasher
(2) Metal “male-female” standoff
(2) Large flat washer
(2) Small flat washer
(2) Lockwasher
(2) Nylon “snap-in” standoff
WARNING!
Hazard of electric shock! Remove power from the drive and wait three minutes before attempting this procedure. DC Bus capacitors retain charge after power is removed.
The internal components of the Micro Series can be damaged by electrostatic discharge (ESD)! Use an antistatic wrist strap with the ground clip attached to the drive
ground lug when attempting this procedure. Always place components on antistatic surfaces or in antistatic bags when they are not being handled during this procedure.
2.2
PROCEDURE
NOTE: Refer to 2.4 Exploded View while performing this procedure. Be careful when removing and installing boards, as there are many pins that can be easily bent.
1.
Remove the drive cover.
2.
Remove the keypad assembly. On NEMA 1 units, this is done by prying one end of the bracket up and out. On NEMA 4 or 12 units, remove the screws that hold
the bracket in place. Then unplug the keypad ribbon cable from the Main Control Board (9933A-XXX or 9019-XXX).
3.
Remove the Main Control Board by unscrewing the four screws (one at each corner) and lifting the Main Control Board straight up and out.
There is a 2 x 6 pin connector that connects the P3 plug on the Main Control Board to the P3 plug on the Power Board below. Leave this plugged into the P3 plug
on the Power Board.
4.
Under the Main Control Board is the Driver Board (9941-XXX) which must be removed to install the DB & Relay Board. Remove the Driver Board by pinching the
flared top of each nylon standoff while gently lifting up on the board (leave the standoffs snapped into the Power Board underneath).
Remove and save the 2 x 6 pin connector (refer to the diagram) that is plugged into PL2 on the Driver Board (another 2 x 6 pin connector may be included in the DB
& Relay kit; only one is needed).
Once the Driver Board is removed, examine the Power Board. There will be three screws in a row between the Bus Capacitors and the PL1 connector. Some units will also
have two standoffs labeled "P" and "B" located below the row of screws. If the Power Board has the "P" and "B" standoffs, go to Step 7. If not, continue with Step 5.
5.
There are three screws in a horizontal row located between the Bus Caps and the PL1 connector on the Power board. Remove and discard the middle and right
screws (which are the middle and bottom screws as viewed on Diagram B).
6.
Install the two metal “male-female” standoffs where the screws were removed in Step 5, using the large flat washers and lockwashers.
7.
Install the two nylon “snap-in” standoffs into the holes at the bottom of the DB & Relay Board near the DB1 and DB2 terminals.
8.
Snap the DB & Relay Board into place where the old Driver Board was, onto the same nylon standoffs that held the Driver Board in place. Make sure that the PL1
and PL3 pin connectors make positive contact through the bottom of the DB & Relay Board.
9.
Install the two screws with captive lockwashers at the top of the DB & Relay Board at the positions marked "P" and "B", using the small flat washers.
10. Install the 2 x 6 pin connector in PL2 on the DB & Relay Board.
11. Re-install the Main Control Board. Make sure that the PL2 and P3 pin connectors make positive contact through the bottom of the Main Control Board.
12. Re-install the keypad assembly and drive cover.
YELLOW WIRE
To TB-14 on Main
Control Board
RED
WIRE
BLUE
WIRE
From Resistor Assembly
DB & Form C
Relay Board
DB1
DB2
19 20 21
2.3
WIRING AND PROGRAMMING
Refer to the diagram to the right for wiring.
The Dynamic Braking board for kit 174192.00 also contains the Additional
Form C Relay option.
To enable Dynamic Braking, set DYN BRAKE (parameter 14) to ON.
To enable the Additional Form C Relay, set TB-14 OUT (parameter 52) to
the desired status indication.
Refer to the drive's Installation and Operation Manual for more info on
programming.
7.5 - 30 HP @ 240 Vac and
10 - 60 HP @ 480 & 590 Vac
Connect each Tab #1 together with screw provided (copy the configuration of the #2 tabs), and move the BLUE wire to Tab #2.
1 5/8" SCREW (TYPICAL 2 PLCS.)
2 5/8" SCREW (TYPICAL 2 PLCS.)
SHOULDER WASHER
(TYPICAL 4 PLCS.)
2 X 6 PIN CONNECTOR
SCREW (TYPICAL 2 PLCS.)
CAPTIVE LOCK WASHER (TYPICAL 2 PLCS.)
SMALL FLAT WASHER (TYPICAL 2 PLCS.)
METAL STANDOFF (TYPICAL 2 PLCS.)
LOCK WASHER (TYPICAL 2 PLCS.)
LARGE FLAT WASHER (TYPICAL 2 PLCS.)
2 X 6 PIN CONNECTOR
1 7/8" STANDOFF (TYPICAL 4 PLCS.)
SNAP-IN STANDOFF
(TYPICAL 4 PLCS.)
2.5
RESISTOR CONFIGURATIONS
When the Dynamic Braking Kit is ordered separately from the Micro Series drive, the resistor assembly will be shipped in the 480 Vac and 590 Vac configuration. For 240
Vac units, the resistor configuration must be modified, as shown below, using the hardware included with the kit.
NOTE: If the Dynamic Braking option is ordered with the drive, the resistor assembly will be shipped in the proper configuration, and no modification is required.
480 Vac & 590 Vac
240 Vac
1
2
1
2
RED
BLUE
SCREW
1
2
1
2
RED
BLUE
SCREW
2.4
EXPLODED VIEW
Applies to kits:
174192.00
7.5 - 30 HP @ 240 Vac and
10 - 60 HP @ 480 & 590 Vac