2.4 Symbols and abbreviaons
This secon tells about used symbols and abbreviaons in this manual. The table that follows gives
the descripons.
Symbol Description Symbol Description
ACS Automac control-system PLC PLC Control
BOS Basic Output Shas (RW) PTO Thermal-overload protecon-switch
C Common connecon PZ Cross head “Pozidriv”
D Model with connuous worm-sha P21/1 Auxiliary contact K21
EM, M Electric motor, Motor P22/1 Auxiliary contact K22
EMC Electromagnec compability P71, P72 Automac-control contacts (ACS)
ESD ElectroStac Discharge RLL Ridder LogicLink
ES11,ES12 Duty switch RLS/RSU RLS Limit-switch system
ES21,ES22 Safety switch RLS/RSU RMC Ridder MotorControl
F1 Fuse rpm revoluons per minute
HEX Hexagonal width-across-ats RPT Ridder PolyTelescope
I Current in Amperes (A) RPU Ridder PosioningUnit
IP Internaonal Protecon Rang RRD Ridder RackDrive
K
Designaon sprocket (assembled
conguraon)
RSD Ridder ScreenDrive
RSU Limit-switch system
kb
Maximum running me in minutes
(kb = KurzBetrieb/ Short operaon)
RW Motor gearbox
SBI Standard Bolt-Installaon
K11 Auxiliary relays (safety switches) SID Screw-in depth
K21, K22
Reversing relay (suciently specied)
for direcon-of-rotaon
SS (S21) System switch (S21)
SW Width-across-ats
K81
Auxiliary relay: 1-phase, 3-wire to
5-wire
S11 Manual switch (bridged safety circuit)
S21 (SS) System switch (SS)
L Model with winch sha S111 Manual switch (MC)
L1 Voltage source TRA Model for built-on rack unit
MC Manual Control TRI Rack drives TRI
MPCB/
Q41
Motor-Protecon Circuit-Breaker
TRN Rack drives TRN
TX Screw head “Torx”
N Neutral wire T1 Safety transformer (EN 61558)
NC “normally closed” U1, U2 Motor connecon
NO “normally open” V1 Motor connecon
PE Protecve earth W1, W2 Motor connecon
PH Cross head “Phillips”
Ridder Drive Systems B.V.
T +31 (0)341 416 854 - F +31 (0)341 416 611 - I ridder.com
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