Manitowoc 999, Service And Maintenance Manual

Page: 146 / 298

Reference
Only
ELECTRIC SYSTEM 999 SERVICE/MAINTENANCE MANUAL
3-36
Published 05-16-17, Control # 233-03
Bank 7 indicates the RIN digital inputs. For example, if Bank
7 displays the number 72, see
Table 3-9 and the shaded
boxes in row 72. This indicates that Jib Maximum Up
Working Limit (8) and Block-Up Limit – Luffing Jib Point (64)
inputs (8 + 64 = 72) are active.
To end the RIN circuit at the last used junction box, a
shorting plug must be plugged into junction box jib cable
receptacle. If shorting plug is not installed, the RIN computer
sees an open circuit and assumes the electrical cable to next
junction box is open. The RIN circuit turns off one or more
block-up limit identifiers (switches) depending on where the
open circuit exists.
With an open RIN circuit at boom top junction box jib cable
receptacle, Bank 7 numbers 32, 64, and 128 are off. With an
open RIN circuit at luffing jib top junction box jib cable
receptacle, Bank 7 number 128 is off.
Bank 8 indicates the status of each RIN computer as shown
below.
Accessory System
1. Rear drum/accessory system pump command in
percent from neutral (+ retract mast cylinders;– extend
mast cylinders).
2. Desired accessory system pressure in psi.
3. Actual accessory system pressure in psi.
4. Rear drum measured pump pressure (hoist) in psi.
5. The boom hoist pump command in percent from neutral
(+ lower mast; – raise mast).
6. Boom hoist measured pump pressure (hoist) in psi.
7. Accessory system switches:
1 - Raise Gantry Remote Switch
2 - Lower Gantry Remote Switch
4 - Mast Raise Switch
8 - Mast Lower Switch
16 - Boom Hinge Pins In Switch
32 - Boom Hinge Pins Out Switch
64 - Accessory System Enable Switch
128 - Spare
Engine Throttle
1. Throttle pedal - is expressed in counts 0 to 25 = low idle
and up to 230 to 255 = high idle.
2. Throttle Lever - is expressed in counts 0 to 25 = low idle
and up to 230 to 255 = high idle.
3. Throttle Command - is expressed in Hertz with Cummins
engines — 100 Hz = low idle and 305 Hz = high idle.
Throttle Command - is expressed in percent with
Caterpillar engines — <20% = high idle and 70% = low
idle.
1 — Block-Up Limit (Boom Point)
2 — Block-Up Limit (Boom Point)
4 — Jib Max Down Limit
8 — Jib Max Up 1 Limit
16 — Jib Max Up 2 Limit
32 — Block-Up Limit (Luffing Jib/Fixed Jib Point)
64 — Block-Up Limit (Luffing Jib Point)
128 — Block-Up Limit (Fixed Jib on Luffing Jib Point)
0 —
EPIC computer is communicating with boom
top RIN computer.
1 —
EPIC computer is communicating with boom
top RIN computer, but there is a
communication fault internal to universal
boom top junction box RIN computer.
2 —
EPIC computer is communicating properly
with boom top RIN computer and boom top
RIN computer is communicating properly with
at least one other RIN computer in series.
4 —
Shorting plug is installed to cable connector
end at boom limit junction box or at cable reel
to bypass operating limit fault(s).
8 —
No communication, all boom top operating
limits are activated when a drum control
handle is moved from neutral.
1
5
2
6
3 4
ACC
7
1
3
2
ENG THROTTLE