Watlow CPC400 Uživatelský manuál stáhnout pdf (Strana 141)

CPC400 Series User’s Guide Chapter 5: Menu and Parameter Reference

Doc. 0600-2900-2000 Watlow Anafaze 127

Cascade Menu

Use the cascade menu to configure cascade control. Use

cascade control to calculate the set point of the current loop

(the secondary, or outer, loop) based upon the output of an-

other loop (the primary, or inner, loop).

For more information about cascade control, see Setting Up

Cascade Control on page 69.

Cascade Primary Loop

Choose the primary loop. The controller uses the output of

the primary loop to calculate the set point of the current

loop.

Values: none (0), or loop 1 to 5 (1 to 5) for a CPC404 or 1 to

9 (1 to 9) for a CPC408. You cannot choose the current loop.

Values in parentheses are for serial communications or

LogicPro.

Default: none (0)

Modbus Address (Loops 1 to 9): 44648 to 44654

Parameter Number: 99

LogicPro Driver: Database

LogicPro Address (Loops 1 to 9): 99.1 to 99.9

Cascade Low Set Point

Enter the set point to use for the current loop when the out-

put of the primary loop is at its minimum value. The set

point will never drop below this value.

• If the primary loop has only the heat output enabled,

then this value is the set point when the heat output

of the primary loop is 0 percent.

• If the primary loop has only the cool output enabled or

has the heat and cool outputs enabled, then this value

is the set point when the cool output is 100 percent.

Values: For a thermocouple or RTD input, any value with-

in the input range (see Table 5.7 on page 104). For a pro-

cess or pulse input, any value between the Input range low

and Input range high parameters. This value must be less

than the Cascade hi SP parameter.

Default: 25 for a thermocouple, RTD or process input; 0 for

the pulse input

Modbus Address (Loops 1 to 9): 44682 to 44690

Parameter Number: 101

LogicPro Driver: Database.

LogicPro Address (Loops 1 to 9): 101.1 to 101.9

Decimal Placement for Modbus or LogicPro: See Dec-

imal Placement for Numeric Values on page 80.

l01 Cascade r

Other menus b

l01 Cascade r

prim loop bnone

l01 Cascade lowr

SP b 25 ˚F

1 2 ... 136 137 138 139 140 141 142 143 144 145 146 ... 229 230

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