Heating Rate Controller · Electrical reference · R1.2

Connection sheets — From → Via → To

Current R1.2 connection reference. Every listed distribution-port connection and direct wire route has a unique row. Check the physical installation against the documentation before servicing; the notation legend explains the terminal symbols.

← Electrical overview Electrical diagrams Components & datasheets Download connection table (CSV)

How connector references correspond

Panel ↔ R1.2 schedule

The front panel uses JP1–JP4 for the four input/output pairs, while the current route schedule uses JP1-IN/OUT for channel 1 and JP2-IN/OUT for channel 2.

Channel	Panel pair	Schedule reference	Purpose
1	JP1	JP1-IN	Upper PSU input
1	JP2	JP1-OUT	Lower heater output
2	JP3	JP2-IN	Upper PSU input
2	JP4	JP2-OUT	Lower heater output

Important: These are document aliases, not an independently verified physical wiring inspection. Check the permanent markings and isolate external DC supplies before making or changing connections. The engineering review includes outstanding technical checks.

Reading the wiring schedule

R1.2 · 70 numbered control and heater routes

Each row names a wire source (FROM), intermediate terminal (VIA) and destination (TO). A value in square brackets, such as [X3-EN1 common net], identifies an electrically common distribution potential, not an extra wire.

Designation	Component type	Where to find details
J1, PS1, E1/E2	Mains inlet, control power supply and Omron controllers	Component models and datasheets
S1/S2, SB1/SB2, K1–K4	CONTROL selectors, ENABLE buttons and Finder relays	Component models and datasheets
W1/W2, SSR1/SSR2, HL1/HL2	Demand interfaces, Crydom SSRs and ACTIVE indicators	Component models and datasheets
X1–X4	Distribution terminals	Terminal-by-terminal allocation
JP, QF, PV, JTC	Panel DC sockets, protection, voltmeters and thermocouple sockets	Component models and datasheets

The positive input supply to each ACTIVE LED is Finder terminal 14 via X3-EN1 or X4-EN2; the LED negative is switched through the corresponding Weidmüller interface.

Scope and protection hold point · PV-FUSE-01: these 70 numbered routes cover the documented heater and control circuits but omit PV1/PV2 voltmeter supply wiring. Manufacturer-specified external 0.25 A / 300 V time-delay protection for TB1 (+/−) input wiring is not installed on either channel. The 70 routes are not a complete as-built circuit schedule. Meter protection requirements and acceptance record →

Find a wire or terminal

Search reference / terminal / textChannel

70 connections shown

Printed sheets always include every connection, regardless of the on-screen filter.

Mains & PE

14 connections

#	Channel	FROM	VIA	TO	Net	Connection note
001	Shared	J1 switched/fused L	X1-L:L.1	[X1-L common net]	X1-L	Incoming feed to common distribution potential
002	Shared	[X1-L common net]	X1-L:L.2	PS1 C1 (L)	X1-L	Separate physical terminal position
003	Shared	[X1-L common net]	X1-L:L.3	S1-A:13	X1-L	Separate physical terminal position
004	Shared	[X1-L common net]	X1-L:L.4	S2-A:13	X1-L	Separate physical terminal position
005	Shared	J1 switched N	X1-N:N.1	[X1-N common net]	X1-N	Incoming feed to common distribution potential
006	Shared	[X1-N common net]	X1-N:N.2	PS1 C2 (N)	X1-N	Separate physical terminal position
007	Shared	[X1-N common net]	X1-N:N.3	E1:12 (N)	X1-N	Separate physical terminal position
008	Shared	[X1-N common net]	X1-N:N.4	E2:12 (N)	X1-N	Separate physical terminal position
009	Shared	J1 PE	X1-PE:PE.1	[X1-PE common net]	X1-PE	Incoming feed to common distribution potential
010	Shared	[X1-PE common net]	X1-PE:PE.2	PS1 C3 (PE)	X1-PE	Separate physical terminal position
011	Shared	[X1-PE common net]	X1-PE:PE.3	cabinet chassis bonding	X1-PE	Separate physical terminal position
012	Shared	[X1-PE common net]	X1-PE:PE.4	flexible door bonding	X1-PE	Separate physical terminal position
049	CH1	S1-A:14	Switched L conductor	E1:11	L1	Schneider contact A is 13–14
050	CH2	S2-A:14	Switched L conductor	E2:11	L2	Schneider contact A is 13–14

24 V shared

12 connections

#	Channel	FROM	VIA	TO	Net	Connection note
013	Shared	PS1 +Vo	X2-24:24.1	[X2-24 common net]	X2-24	Incoming feed to common distribution potential
014	Shared	[X2-24 common net]	X2-24:24.2	S1-B:23	X2-24	Separate physical terminal position
015	Shared	[X2-24 common net]	X2-24:24.3	S2-B:23	X2-24	Separate physical terminal position
016	Shared	PS1 −Vo	X2-0V:0V.1	[X2-0V common net]	X2-0V	Incoming feed to common distribution potential
017	Shared	[X2-0V common net]	X2-0V:0V.2	K1 N/−	X2-0V	Separate physical terminal position
018	Shared	[X2-0V common net]	X2-0V:0V.3	SK3:A2	X2-0V	Separate physical terminal position
019	Shared	[X2-0V common net]	X2-0V:0V.4	SB1 LED−	X2-0V	Separate physical terminal position
020	Shared	[X2-0V common net]	X2-0V:0V.5	W1:14(−)	X2-0V	Separate physical terminal position
021	Shared	[X2-0V common net]	X2-0V:0V.6	K2 N/−	X2-0V	Separate physical terminal position
022	Shared	[X2-0V common net]	X2-0V:0V.7	SK4:A2	X2-0V	Separate physical terminal position
023	Shared	[X2-0V common net]	X2-0V:0V.8	SB2 LED−	X2-0V	Separate physical terminal position
024	Shared	[X2-0V common net]	X2-0V:0V.9	W2:14(−)	X2-0V	Separate physical terminal position

Heater enable

20 connections

#	Channel	FROM	VIA	TO	Net	Connection note
025	CH1	S1-B:24	X3-24G:1	[X3-24G common net]	X3-24G	Incoming feed to common distribution potential
026	CH1	[X3-24G common net]	X3-24G:2	K1 L/+	X3-24G	Separate physical terminal position
027	CH1	[X3-24G common net]	X3-24G:3	K1:11	X3-24G	Separate physical terminal position
028	CH1	[X3-24G common net]	X3-24G:4	SB1:C	X3-24G	Separate physical terminal position
029	CH1	K1:14	X3-EN1:1	[X3-EN1 common net]	X3-EN1	Incoming feed to common distribution potential
030	CH1	[X3-EN1 common net]	X3-EN1:2	SK3:A1	X3-EN1	Separate physical terminal position
031	CH1	[X3-EN1 common net]	X3-EN1:3	SB1 LED+	X3-EN1	Separate physical terminal position
032	CH1	[X3-EN1 common net]	X3-EN1:4	SSR1 A1/+3	X3-EN1	Separate physical terminal position
033	CH1	[X3-EN1 common net]	X3-EN1:5	HL1+	X3-EN1	HL1+ supplied from Finder K1:14 through X3-EN1.
037	CH2	S2-B:24	X4-24G:1	[X4-24G common net]	X4-24G	Incoming feed to common distribution potential
038	CH2	[X4-24G common net]	X4-24G:2	K2 L/+	X4-24G	Separate physical terminal position
039	CH2	[X4-24G common net]	X4-24G:3	K2:11	X4-24G	Separate physical terminal position
040	CH2	[X4-24G common net]	X4-24G:4	SB2:C	X4-24G	Separate physical terminal position
041	CH2	K2:14	X4-EN2:1	[X4-EN2 common net]	X4-EN2	Incoming feed to common distribution potential
042	CH2	[X4-EN2 common net]	X4-EN2:2	SK4:A1	X4-EN2	Separate physical terminal position
043	CH2	[X4-EN2 common net]	X4-EN2:3	SB2 LED+	X4-EN2	Separate physical terminal position
044	CH2	[X4-EN2 common net]	X4-EN2:4	SSR2 A1/+3	X4-EN2	Separate physical terminal position
045	CH2	[X4-EN2 common net]	X4-EN2:5	HL2+	X4-EN2	HL2+ supplied from Finder K2:14 through X4-EN2.
051	CH1	SB1:NO	Momentary pulse conductor	K1:3	PULSE1	EAO NO must be identified from part markings
052	CH2	SB2:NO	Momentary pulse conductor	K2:3	PULSE2	EAO NO must be identified from part markings

SSR demand

14 connections

#	Channel	FROM	VIA	TO	Net	Connection note
034	CH1	W1:13(+)	X3-DRV1:1	[X3-DRV1 common net]	X3-DRV1	Incoming feed to common distribution potential
035	CH1	[X3-DRV1 common net]	X3-DRV1:2	SSR1 A2/−4	X3-DRV1	Separate physical terminal position
036	CH1	[X3-DRV1 common net]	X3-DRV1:3	HL1−	X3-DRV1	Separate physical terminal position
046	CH2	W2:13(+)	X4-DRV2:1	[X4-DRV2 common net]	X4-DRV2	Incoming feed to common distribution potential
047	CH2	[X4-DRV2 common net]	X4-DRV2:2	SSR2 A2/−4	X4-DRV2	Separate physical terminal position
048	CH2	[X4-DRV2 common net]	X4-DRV2:3	HL2−	X4-DRV2	Separate physical terminal position
053	CH1	JTC1:TC+	Type K positive leg	E1:6 (+)	TC1+	Check connector polarity
054	CH1	JTC1:TC−	Type K negative leg	E1:5 (−)	TC1−	Check connector polarity
055	CH2	JTC2:TC+	Type K positive leg	E2:6 (+)	TC2+	Check connector polarity
056	CH2	JTC2:TC−	Type K negative leg	E2:5 (−)	TC2−	Check connector polarity
057	CH1	E1:1 (+)	12 V SSR demand conductor	W1:A1 (+)	OUT1+	Omron QX output
058	CH1	E1:2 (−)	12 V SSR demand return	W1:A2 (−)	OUT1−	Omron QX output
059	CH2	E2:1 (+)	12 V SSR demand conductor	W2:A1 (+)	OUT2+	Omron QX output
060	CH2	E2:2 (−)	12 V SSR demand return	W2:A2 (−)	OUT2−	Omron QX output

DC heater

10 connections

#	Channel	FROM	VIA	TO	Net	Connection note
061	CH1	JP1-IN:DC+	Supply-positive lead	QF1:1	P1-01	External DC supply 0–60 V
062	CH1	QF1:2	Breaker output lead	SK3:34 (+) / K3	P1-02	Finder DC-polarity marking on positive circuit
063	CH1	SK3:14 (−) / K3	Contact output lead	SSR1:+1	P1-03	Still SWITCHED DC+ (not 0 V)
064	CH1	SSR1:−2	Solid-state relay output lead	JP1-OUT:HEATER+	P1-04	Still SWITCHED DC+ (not 0 V)
065	CH1	JP1-IN:DC−	Separate direct negative return	JP1-OUT:HEATER−	P1-05	Must not pass through 62.31 contact 14
066	CH2	JP2-IN:DC+	Supply-positive lead	QF2:1	P2-01	External DC supply 0–60 V
067	CH2	QF2:2	Breaker output lead	SK4:34 (+) / K4	P2-02	Finder DC-polarity marking on positive circuit
068	CH2	SK4:14 (−) / K4	Contact output lead	SSR2:+1	P2-03	Still SWITCHED DC+ (not 0 V)
069	CH2	SSR2:−2	Solid-state relay output lead	JP2-OUT:HEATER+	P2-04	Still SWITCHED DC+ (not 0 V)
070	CH2	JP2-IN:DC−	Separate direct negative return	JP2-OUT:HEATER−	P2-05	Must not pass through 62.31 contact 14