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SCHNEIDER AUTOMATION MODICON 140CPS21400 POWER SUPPLY 8AMP 24VDC, PV: 03, RL: 19

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SCHNEIDER AUTOMATION MODICON 140CPS21400 POWER SUPPLY 8AMP 24VDC, PV: 03, RL: 19

Country/Region	china
City & Province	shenzhen guangdong
Categories	Solar Chargers

Product Details

SCHNEIDER AUTOMATION MODICON 140CPS21400 POWER SUPPLY 8AMP 24VDC, PV: 03, RL: 19

Throughout these notes, all rings are assumed to be commutative with identity.

§1. Definitions and examples

Definition 1.1. A ring R is called graded (or more precisely, Z-graded ) if there exists a family of subgroups {Rn}n∈Z of R such that

(1) R = ⊕nRn (as abelian groups), and

(2) Rn · Rm ⊆ Rn+m for all n, m.

A graded ring R is called nonnegatively graded (or N- graded) if Rn = 0 for all n ≤ 0. A non-zero element x ∈ Rn is called a homogeneous element of R of degree n. Remark 1.1. If R = ⊕Rn is a graded ring, then R0 is a subring of R, 1 ∈ R0 and Rn is an R0-module for all n. proof. As R0 · R0 ⊆ R0, R0 is closed under multiplication and thus is a subring of R. To

see that 1 ∈ R0, write 1 =

xn where each xn ∈ Rn and all but finitely many of the

xn’s are zero. Then for all i,

xi = 1 · xi =

xixn.

By comparing degrees, we see that xi = xix0 for all i. Therefore,

x0 = 1 · x0 =

xnx0

xn = 1.

Hence 1 = x0 ∈ R0. The last statement follows from the fact that R0 · Rn ⊆ Rn for all n.

Exercise 1.1. Prove that all units in a graded domain are homogeneous. Also, prove that if R is a graded field then R is concentrated in degree 0; i.e., R = R0 and Rn = 0 for all

n 6= 0.

Exercise 1.2. Let R be a graded ring and I an ideal of R0. Prove that IR ∩ R0 = I. Examples of graded rings abound. In fact, every ring R is trivially a graded ring by letting R0 = R and Rn = 0 for all n 6= 0. Other rings with more interesting gradings are given below.

The CableFast wiring system eliminates wiring between the I/O module and field wiring terminal blocks. The CableFast
system reduces wiring time, lowers installation cost, and eliminates wiring errors.
The CableFast system consists of pre-wired Quantum field wiring terminal strips, available in various cable lengths that
are terminated with "D" type connectors. The "D" connectors plug into DIN rail mounted terminal blocks offered in straight
through or special application versions. Cables and terminal blocks are ordered separately and all terminal blocks may
be used with any cable length. Pigtail cable versions are also available.
i 140 CFA 040 00 The A block is a straight through point to point connection on the terminal block.
Wiring of this block is identical to wiring the Quantum I/O connector (140 XTS 002 00).
i 140 CFB 032 00 The B block is used for individually fused 2-wire digital inputs. This terminal block is designed
to prevent a single point failure from affecting the remaining inputs. It is not recommended for
sourced 1-wire inputs (powered from the field).
i 140 CFC 032 00 The C block provides connection for 32 group fused input or output points. The block may be
used for 1- or 2-wire inputs or outputs, and features a fuse per group, four groups total. Users
select input or output mode via four switches located on the module. (The default is input mode.)
i 140 CFD 032 00 The D block is used for sensors requiring either 2- or 3-wire electrical interface. A fuse per group
is supplied to accomodate the I/O module (4) groups.
i 140 CFE 032 00 The E block provides connection for 32 individually fused 24 Vdc outputs. 1- and 2-wire
interfacing may be selected. Field power must be supplied to the four groups.
i 140 CFG 016 00 The G block is a high power output block used on both AC and DC circuits requiring up to 2 A.
Individual fusing is provided and may be used in both 1- and 2-wire installations. It is also used
for isolated AC modules.
i 140 CFH 008 00 The H block is used for analog inputs, with individual fusing provided per channel. This interface
provides plus, minus, shield, and power supply interface for both field and loop power
configurations.
i 140 CFI 008 00 The I block is used for analog inputs. This interface provides plus, minus, shield, and power
supply interface for both field and loop power configurations.
i 140 CFJ 004 00 The J block is used for analog outputs, with individual fusing provided per channel. This interface
provides plus, minus, shield, and power supply interface for both field and loop power
configurations.
i 140 CFK 004 00 The K block is used for analog outputs. This interface provides plu